Blocking Mats Best Blocking Mats for Knitting and Crochet Projects
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By the Pickpedia Team
·9 picks compared
·Last verified November 2026
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Quick answer
The MicoSim 9-piece blocking mat set takes the top spot, with thick 0.75 inch foam and a steam-safe surface. Mr. Pen's 9-pack with 150 T-pins follows, and the Suwimut set rounds out the top three with a storage bag and 100 pins.
Best Blocking Mats for Knitting and Crochet Projects at a glance
Why you can trust this guide
We compared these picks using verified manufacturer specifications, available manuals and documentation, current retailer listings, and patterns in owner feedback, alongside editorial research. We focus on measurable differences such as performance, capacity, usability, and build quality. Pickpedia does not present editorial research as laboratory testing, and we do not claim hands-on testing unless it was actually performed.
Blocking mats give knitted and crocheted pieces a flat, pinnable surface so lace opens up, edges straighten, and granny squares come out the same size. The differences between sets come down to foam thickness, grid accuracy, heat resistance, and how many T-pins come in the box.
We compared the mats on this list using manufacturer specs and owner feedback, looking at thickness, grid layout, interlocking fit, and included accessories. Thicker foam holds pins more firmly, while a printed 1 inch grid keeps measurements consistent from square to square.
Our top picks
The 0.75 inch foam is made with a three-times foaming process, so pins seat deep and stay put. Each mat carries a clean 1 inch by 1 inch grid with no extra lines, which keeps alignment simple. It is rated heat resistant to 320 degrees Fahrenheit, so steam blocking will not warp the surface.
Set size9 interlocking mats
Mat size12 in standard mats
Thickness0.75 in
Grid1 in x 1 in squares
Heat ratingUp to 320 F
Included50 T-pins and storage bag
Pros
- Thick 0.75 inch foam grips pins firmly
- Steam and heat resistant to 320 F
- Grid has no extra lines for cleaner alignment
Cons
- Only 50 T-pins in the set
- Interlocking pieces take time to lay out
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Nine 12 by 12 inch mats interlock into a broad working surface, and the 1 inch aligned grid makes measuring consistent. The set ships with 150 T-pins, the most generous count among the sets we compared. Mats are listed as water and heat resistant for wet and steam blocking.
Set size9 interlocking mats
Mat size12 in x 12 in
Grid1 in aligned grid
Included150 T-pins
ResistanceWater and heat resistant
Pros
- 150 T-pins covers big lace projects
- Clear 1 inch grid for accurate measuring
- Water and heat resistant surface
Cons
- Thickness is not listed
- No storage bag mentioned
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These 12 by 12 inch EVA mats are 0.75 inch thick and lock together into a 36 by 36 inch square or any shape you need. A 1 inch grid keeps rows aligned, and the dense foam holds pins firmly. The set includes 100 T-pins and a clear storage bag.
Set size9 interlocking mats
Mat size12 in x 12 in
Thickness0.75 in
Grid1 in aligned grid
Included100 T-pins and clear storage bag
Pros
- Assembles to 36 by 36 inches
- Dense 0.75 inch EVA foam holds pins
- Storage bag keeps mats and pins together
Cons
- Fewer pins than the Mr. Pen set
- Only one color option listed
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Opstin uses high-density EVA foam at 0.75 inch thick, described as non-allergenic when in contact with skin. Each 12 inch mat interlocks into a 36 inch square or a custom shape. Precise alignment grid lines help keep stitches even, and the set comes with 150 T-pins and a storage bag.
Set size9 interlocking mats
Mat size12 in x 12 in
Thickness0.75 in
MaterialHigh-density EVA foam
Included150 T-pins and storage bag
Pros
- Non-allergenic EVA foam
- Thick foam holds pins deeply
- 150 T-pins and storage bag included
Cons
- Grid spacing is not specified
- Limited color choices
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This 9-pack is built for wet blocking, steam blocking, and drying knits flat. The set includes 100 T-pins, a 10 pin blocker, and a storage bag for keeping everything together. Mats suit square blankets, curved armholes, gloves, sweaters, and scarves.
Set size9 mats
Included100 T-pins, 10 pin blocker, storage bag
UseWet and steam blocking
ProjectsBlankets, gloves, sweaters, scarves
Pros
- Pin blocker included for even spacing
- Storage bag keeps the kit tidy
- Handles wet and steam blocking
Cons
- Thickness is not listed
- Grid detail is not described
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Nine mats at 12.5 by 12.5 inches each build a surface up to 36 by 36 inches, enough for scarf and blanket blocking. A numbered grid design supports precise alignment, and the set includes 200 T-pins plus a storage case. The black finish suits crafters who want a neutral surface.
Set size9 interlocking mats
Mat size12.5 in x 12.5 in
Thickness0.7 in
GridNumbered grid design
Included200 T-pins and storage case
Pros
- 200 T-pins, the most on this list
- Slightly larger mats build a bigger area
- Numbered grid aids alignment
- Storage case included
Cons
- Thinner foam than 0.75 inch sets
- Black surface may show lint
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Each CraftyManor mat is 12 by 12 inches with a standard 1 inch grid and splices together in any arrangement. At 0.36 inch thick, the PVC foam is lighter and easier to move and store. A non-slip back keeps the assembled board steady, and the material resists steam without deforming.
Set size9 interlocking mats
Mat size12 in x 12 in
Thickness0.36 in
Grid1 in x 1 in squares
Included50 stainless steel T-pins
Pros
- Light and easy to move or store
- Non-slip backing keeps mats steady
- Steam resistant PVC foam
Cons
- Thinner foam than most sets here
- Only 50 T-pins included
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This set pairs nine interlocking EVA foam tiles with 50 T-pins and 8 blocking combs. The mats carry both grid lines and a circle line, which helps with round and square motifs. The larger assembled area suits sweaters, shawls, and granny squares.
Set size9 interlocking EVA tiles
Mat size12 in x 12 in
GridGrid lines plus circle line
Included50 T-pins and 8 blocking combs
Pros
- Blocking combs give even tension
- Circle line helps with round motifs
- Nine tiles make a large area
Cons
- Only 50 T-pins included
- Thickness is not listed
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Svartur bundles nine interlocking mats with 100 T-pins, 12 small crochet blocking combs, and a storage bag. Each square mat measures 12 inches and is 0.47 inch thick, giving enough room for granny squares and larger pieces. The grid line helps keep shaping consistent.
Set size9 interlocking mats
Mat size12 in squares
Thickness0.47 in
Included100 T-pins, 12 blocking combs, storage bag
Pros
- 12 blocking combs for detailed work
- 100 T-pins and storage bag included
- Works from granny squares to larger pieces
Cons
- Thinner than 0.75 inch sets
- Grid spacing is not specified
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What to look for
What blocking mats actually do
Blocking mats give wet or steamed fiber a flat, pinnable surface so it dries in the shape you want. A printed grid lets you match granny squares and keep edges straight. Interlocking edges let you build a 36 by 36 inch area for blankets or a small square for a single motif.
Foam thickness and pin grip
Thicker foam holds T-pins more securely, which matters for lace and heavy wet wool. Sets on this list range from 0.36 inch to 0.75 inch. The 0.75 inch options from MicoSim, Suwimut, and Opstin seat pins deepest, while thinner mats are lighter to move and store.
Grids, combs, and accessories
A clean 1 inch grid is the easiest to read, and extra lines can clutter the surface. Blocking combs, like the eight in the Yarniss set and the twelve in the Svartur kit, hold edges at even tension. Pin counts vary widely, from 50 up to 200, so match the count to the size of your projects.
Heat, steam, and storage
Steam blocking exposes foam to heat, so check the heat rating before you steam. The MicoSim mats are rated to 320 degrees Fahrenheit, and several other sets are listed as steam resistant. A storage bag or case keeps mats flat and pins contained between sessions.
Frequently asked questions
Can these mats handle steam blocking?
Yes. The MicoSim set is rated heat resistant to 320 degrees Fahrenheit, and the CraftyManor mats are listed as steam resistant. Check each set's heat rating before applying steam directly.
What size area can I build with a 9-pack?
Most sets use 12 inch mats, so nine pieces build roughly a 36 by 36 inch square. The Bright Creations mats are slightly larger at 12.5 inches, so the assembled area runs a bit bigger.
How many T-pins do I need for a blanket?
For a large blanket, more pins help hold long edges evenly. The Bright Creations set includes 200 T-pins and the Mr. Pen and Opstin sets include 150, while several other sets include 50 or 100.
Are blocking combs worth having?
Combs hold an edge at even tension and speed up shawl and square blocking. The Yarniss set includes 8 combs and the Svartur kit includes 12, so you can work several edges at once.
What thickness should I look for?
Thicker foam grips pins better, especially for lace and wet wool. Sets at 0.75 inch from MicoSim, Suwimut, and Opstin offer the firmest hold, while 0.36 to 0.47 inch mats are lighter to carry.
Can I use these mats for crochet granny squares?
Yes. The 1 inch grid makes it easy to pin each square to the same size. The Yarniss mats also include a circle line, which helps with round motifs.
Will the mats slide on a table?
Several sets use a non-slip backing, including the MicoSim and CraftyManor mats. That keeps the assembled board steady while you pin.
How do I store the mats between projects?
Most sets here ship with a storage bag or case. The MicoSim, Suwimut, Opstin, WooLove, Bright Creations, Yarniss, and Svartur sets all list a bag or case, which keeps mats flat and pins together.
The verdict
9 PCS Knitting Mats
9.4/10/10
For most knitters and crocheters, the MicoSim 9-piece set is the strongest pick, pairing 0.75 inch foam with a clean 1 inch grid and a 320 degree Fahrenheit heat rating. The Mr. Pen set is the choice when you want 150 pins in the box, and the Suwimut set adds a storage bag with thick EVA foam. Match thickness and pin count to the size of your projects and you will get years of use.
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