If youโve never tried a thrummed mitten, youโre in for a treat. These fleece-lined wonders are like little hand hugs โ soft, fluffy, and incredibly warm!
The Rockies Thrummed Crochet Mittens debuted in the First Fall 2025 Make-Along and are the perfect way to add a new technique to your crochet toolbox. This free crochet thrummed mitten pattern walks you through every stitch to create mittens youโll actually wear… and everyone will request.
Updated July 21, 2026
โก Quick Answer:
Thrummed crochet mittens are worked in the round using single crochet, with small tufts of unspun wool roving (“thrums”) folded in every few stitches to create a warm, felted lining. This free pattern comes in 4 sizes (Child through Large Adult) using bulky-weight wool on a US J/6mm hook, and includes a full video tutorial.

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Want a clean, printable, ad-free version you can mark up and take anywhere? Grab the ad-free PDF on Etsy.
๐งค What Are Thrummed Mittens?
Thrummed mittens originated in Newfoundland and Labrador, Canada โ a region famous for brutal winters and cozy woolwear. Instead of using a separate lining, thrummed mittens add tiny tufts of unspun roving (โthrumsโ) directly into the fabric as you crochet.
Those fluffy thrums create a soft, felt-y interior that keeps your hands warm on even the coldest days. Once you wear them, you wonโt want to go back to plain mittens!
If youโre new to thrums, check out my quick tutorial before starting:
๐ Why Youโll Love This Free Crochet Thrummed Mitten Pattern
- Serious Warmth: The roving thrums create a cozy, fleece-like interior that traps heat.
- Texture You Can Feel: Those little clouds look cute and work hard.
- Beginner-Friendly Technique: If you can single crochet in the round, you can learn to thrum.
- Giftable & Fast: Bulky yarn + simple shaping = quick wins for everyone on your list.
- Confidence Boost: Try a new technique with step-by-step support and video help.

๐งถ Yarn + Materials for Thrummed Crochet Mittens
For the sample shown, I used Wool of the Andes Bulky from WeCrochet (same company as KnitPicks) โ itโs soft, sturdy, and absolutely perfect for thrummed mittens. Use a contrasting roving color so your thrums pop beautifully on the outside.
Yarn Used:
- Knit Picks Wool of the Andes Bulky โ Get it here
- Knit Picks Wool of the Andes Roving โ Get it here
Yarn Alternatives (Bulky/Category 5):
- Knit Picks Wool of the Andes Superwash Bulky โ Get it here
- Knit Picks Swish Bulky โ Get it here
- Semilla Grosso GOTS (Hobbii) โ Get it here
Hook:
- Size J/10 (6.0 mm), or size needed to obtain gauge
Notions:
- Removable stitch markers
- Tapestry needle
- Chenille-type needle
- Quality project bag
- (Optional) Leather tag โ Get it here
- (Optional) Leather rivets โ Get it here
๐ชก Pattern Details & Skill Level
Skill Level: Intermediate
To Fit Sizes: Child (Small Adult, Medium Adult, Large Adult)
Finished Hand Circumference: 6 (7, 8, 9) inches [15 (18, 20.5, 23) cm] not including the extra fluff from thrums
Gauge: 14 sts x 15 rnds = 4″ x 4″ (10 x 10 cm) in pattern stitch in the round; use any hook size to meet gauge.
Construction Notes:
- Cuff is worked flat and seamed, then the hand is worked in joined rounds from the long edge.
- Thrums are added as you crochet (see Special Stitches).
- Use a marker to identify the first stitch of each round; do not turn at the end of rounds.
- Join rounds with an invisible join for a clean look (see Special Stitches).

๐ Get the Ad-Free PDF
This free crochet thrummed mitten pattern is right here on the blog, but if youโd like a clean, printable, ad-free version you can mark up and take on the go, grab the ad-free PDF on Etsy.
๐งค Free Crochet Thrummed Mitten Pattern โ Rockies Thrummed Crochet Mittens
The airโs getting crisp, the PSLs are flowing, and itโs time to stitch up the for the coziest project of the season โ the Rockies Crochet Thrummed Mittens. The easy-to-follow stitch pattern and step-by-step video tutorial make it simple to stay on track, even if youโve never made thrums before. Each stitch feels like a little love letter to winter, wrapping your hands in warmth and texture. The thrums create a cloud-like lining thatโs unbelievably soft and toasty. Once you see those fluffy bits take shape, youโll be hooked โ one pair quickly turns into a whole pile for friends and family!
SKILL LEVEL
Intermediate
MEASUREMENTS
To Fit Size
Child (Small Adult, Medium Adult, Large Adult)
Finished Measurements
Finished Hand Circumference: 6 (7, 8, 9) inches [15 (18, 20.5, 23) cm] not including the extra fluff of the thrums
Gauge
14 sts x 15 rounds = 4″ (10 cm) x 4″ (10 cm) in pattern stitch in the round; use any size hook to obtain the gauge.
MATERIALS
Crochet Yarn
Knit Picks, Wool of the Andes Bulky Yarn (100% Peruvian Highland Wool, 137 yds / 125 m, 3.5 oz/ 100 g, CYCA# 5 bulky): #28220 Spruce, 1 (1, 2, 2) hanks
Knit Picks, Wool of the Andes Roving (100% Peruvian Highland Wool Roving, 3.5 oz/ 100 g): #28171 Fjord Heather, 1 (1, 1, 1) hank
For best results, choose colors that contrast. This will make it so you can see the thrums on the outside of the mitten.
Crochet Hook Size J/10 [6.0 mm]
Notions
- Removable stitch markers,
- tapestry needle,
- chenille type needle,
- quality project bag I absolutely, these ones,
- Leather tag (optional),
- leather rivets (optional)
ABBREVIATIONS
CH – Chain(s)
BLO – Back Loop Only
PM – Place Marker
RS – Right Side
SC – Single Crochet
SL ST – Slip Stitch
ST(S) – Stitch(es)
WS – Wrong Side
SPECIAL STITCHES
โญ๏ธChain (ch): With slip knot or free loop on hook, yarn over hook and pull through loop on hook.
โญ๏ธInvisible join: This is created by removing the free loop from hook, thread hook from front to back in first st, place free loop on hook and draw through stitch.
โญ๏ธSingle Crochet (sc): Insert hook into indicated stitch, yarn over and pull up a loop, yarn over and draw through 2 loops on hook.
โญ๏ธSingle Crochet Two Together (sc2tog): *Insert hook into indicated stitch, yarn over and pull up a loop; repeat from * in next stitch indicated, yarn over and draw through all 3 loops on hook.
โญ๏ธ Single Crochet (sc-thrum): insert hook into next st, hold thrum over hook so ends are to the inside of mitten, yarn over hook, draw thrum and yarn through st (loop, thrum, loop), pull the first front loop on hook through ONLY the thrum (2 loops on hook), yarn over and draw through two loops hook.
โญ๏ธSlip Stitch (sl st): Insert hook into indicated stitch, yarn over and pull up a loop and draw through loop on hook.
NOTES
- The instructions are written for the smallest size. If changes are necessary for larger sizes the instructions will be written thus ( ). When only one number is given, it applies to all sizes.
- A thrum is a lock of fleece about 4″ (10 cm) long with both ends folded to the middle, then twisted/rubbed together. Center of thrum should be approx the same thickness as the yarn being used for mitten.
- The end of the thrums (โthe butterflyโ) will tuck into the wrong side of the mitten.
- Make thrums prior to beginning the mitten.
- Cuff of the mitt is worked flat then seamed together before starting on the body of mitten.
- Body of the mitt is worked into the long side edge of the cuff as instructed.
- Body of the mitt is worked in joined rounds. Use a marker to identify the first stitch of each round. Do not turn at end of each round.
- Join each round with an invisible join (see special stitches).
- Stitches highlighted in green are part of the thumb gusset.
VIDEO TUTORIALS
- Slip Stitch Crochet Ribbing >> Click Here for Video Help <<
- Single Crochet >> Click Here for Video Help <<
- Through the Back Loop >> Click Here for Video Help <<
- How to Bury Ends >> Click Here for Video Help <<
- How to Make Thrums >> Click Here for YouTube Video <<
- How to Crochet the Rockies Thrummed Crochet Mittens >> Click Here for YouTub Video <<

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ROCKIES THRUMMED CROCHET MITTENS PATTERN
CUFF
Chain 6 (6, 8. 10)
Row 1 (RS): Sl st in 2nd ch from hook and in each ch across, turn — 5 (5, 7, 9) slip stitches.
Row 2: Ch 1, sl st-blo in each stitch across, turn.
Repeat last row 18 (22, 26, 30) more times โ 20 (24, 28, 32) rows.
Cuff Seaming
Joining Row: Ch 1, *sl st-blo of next st and next ch on foundation ch at the same time: repeat from * across, do not turn.

LOWER HAND
THUMB GUSSET
Round 1 (increase round): Sc in first st, sc-thrum in next st, sc in next 3 sts, sc-thrum in next st, 2 sc in next st (place a marker in the first stitch of the two), sc in next st, 2 sc in next st (place a marker in the second stitch of the two), *sc-thrum in next st, sc in next 3 sc; repeat from * to last 3 sts, sc-thrum in next st, sc in next 2 sts, join to first sc. โ 17 (21, 25, 29) sts + 5 sts on thumb.
Round 2: Sc in first st and in each sc around, join to first sc. Move the marker up on the thumb stitches.
Round 3: Sc in next 3 sts, sc-thrum in next st, sc in next 2 sts, sc in next 2 sts (move marker up), sc-thrum in next st, sc in next 2 sts (move marker up), sc in next 2 sts, *sc-thrum, sc in next 3 st3; repeat from * to last st, sc-thrum in last stitch, join to first sc.
Round 4: Sc in first st and in each sc around, join to first sc. Move the marker up on the thumb stitches.
Round 5 (increase round): Sc in first st, sc-thrum in next st, sc in next 3 sts, sc-thrum in next st, 2 sc in next st (move marker in the first stitch of the two), sc in next 3 sts, 2 sc in next st (move marker in the second stitch of the two), *sc-thrum in next st, sc in next 3 sc; repeat from * to last 3 sts, sc-thrum in next st, sc in next 2 sts, join to first sc. โ 17 (21, 25, 29) sts + 7 sts on thumb
Round 6: Sc in first st and in each sc around, join to first sc. Move the marker up on the thumb stitches.
Round 7: Sc in next 3 sts, sc-thrum in next st, sc in next 2 sts, sc in next 3 sts (move marker up), sc-thrum, sc in next 3 sts (move marker up), sc in next 2 sts, *sc-thrum, sc in next 3 st3; repeat from * to last st, sc-thrum in last stitch, join to first sc.
Round 8: Sc in first st and in each sc around, join to first sc. Move the marker up on the thumb stitches.
Round 9 (increase round): Sc in first st, sc-thrum in next st, sc in next 3 sts, sc-thrum in next st, 2 sc in next st (move marker in the first stitch of the two), sc-thrum in next st, sc in next 3 sts, sc-thrum in next st, 2 sc in next st (move marker in the second stitch of the two), *sc-thrum in next st, sc in next 3 sc; repeat from * to last 3 sts, sc-thrum in next st, sc in next 2 sts, join to first sc. โ 17 (21, 25, 29) sts + 9 sts on thumb
Round 10: Sc in first st and in each sc around, join to first sc. Move the marker up on the thumb stitches.
Child Size Continue to Upper Hand
Round 11 (increase round): Sc in next 3 sts, sc-thrum in next st, sc in next 2 sts, 2 sc in next st (move marker up), sc in next 3 sts, sc-thrum in next st, sc in next 3 sts, 2 sc in next st (move marker up), sc in next 2 sts, *sc-thrum, sc in next 3 st3; repeat from * to last st, sc-thrum in last stitch, join to first sc โ – (21, 25, 29) sts + 11 sts on thumb
Round 12: Sc in first st and in each sc around, join to first sc. Move the marker up on the thumb stitches.
Small Adult Size Continue to Upper Hand
Round 13 (increase round): Sc in first st, sc-thrum in next st, sc in next 3 sts, sc-thrum in next st, 2 sc in next st (move marker in the first stitch of the two), sc in next 2 sts, sc-thrum in next st, sc in next 3 sts, sc-thrum in next st, sc in next 2 sts, 2 sc in next st (move marker in the second stitch of the two), *sc-thrum in next st, sc in next 3 sc; repeat from * to last 3 sts, sc-thrum in next st, sc in next 2 sts, join to first sc. โ – (-, 25, 29) + 13 sts on thumb
Round 14: Sc in first st and in each sc around, join to first sc. Move the marker up on the thumb stitches.
Medium Adult Size Continue to Upper Hand
Round 15 (increase round): Sc in next 3 sts, sc-thrum in next st, sc in next 2 sts, 2 sc in next st (move marker up), sc in next st, [sc-thrum in next st, sc in next 3 sts] twice, sc-thrum in next st, sc in next st, 2 sc in next st (move marker up), sc in next 2 sts, *sc-thrum, sc in next 3 st3; repeat from * to last st, sc-thrum in last stitch, join to first sc. โ – (-, -, 29) sts + 15 sts on thumb
Round 16: Sc in first st and in each sc around, join to first sc. Move the marker up on the thumb stitches.
Large Adult Size Continue to Upper Hand

UPPER HAND
CHILD AND MEDIUM ADULT ONLY
Round 1: Sc in next 3 sts, sc-thrum in next st, sc in next 2 sts, ch 3, skip ALL thumb sts, sc in next 2 sts, *sc-thrum, sc in next 3 st3; repeat from * to last st, sc-thrum in last stitch, join to first sc – 17 (-, 25, -) sts + ch-3 sp.
Round 2: Sc in first st and in each st around (including chs), join to first sc.- 20 (-, 28, -) sc.
SMALL AND LARGE ADULT ONLY
Round 1: Sc in first st, sc-thrum in next st, sc in next 3 sts, sc-thrum in next st, ch 3, skip ALL thumb sts, *sc-thrum in next st, sc in next 3 sc; repeat from * to last 3 sts, sc-thrum in next st, sc in next 2 sts, join to first sc – – (21, -, 29) sts + ch-3 sp.
Round 2: Sc in first st and in each st around (including chs), join to first sc.- – (24, -, 32) sc.
Round 3: *Sc in next 3 sts, sc-thrum in next st; repeat from * around, join to first sc.
Round 4: Sc in each st around, join to first sc.
ALL SIZES
Round 3 (5, 3. 5): Sc in first st, *sc-thrum in next st, sc in next 3 sts; repeat from * to last 3 sts, sc-thrum in next st, sc in next 2 sts, join to first sc.
Round 4 (6, 4, 6): Sc in each st around, join to first sc.
Round 5 (7, 5, 7): *Sc in next 3 sts, sc-thrum in next st; repeat from * around, join to first sc.
Round 6 (8, 6, 8): Sc in each st around, join to first sc.
Continue in pattern (last 4 rounds) until the mitten measures approx 6 (7, 8, 9)โ [ 15, 18, 20.5, 23 cm] from edge to top of mitten (not including cuff) ending after a Round 5 (7, 5, 7).







































