It's StickyFelt!9 x 12 sheets of craft felt in tons of colors, with a super-sticky peel-and-stick backing that sticks to (and holds on to)
Lusofie 12Sheets Self Adhesive Felt Fabric 12x 8 Velvet Felt Sheet Sticky Back Drawer Liner for DIY Craft and Sewing Projects Jewelry Box(Grey) - Yahoo Shopping
Black Adhesive Back Felt Sheets Fabric Sticky Back Sheets Self-Adhesive Durable and Water Resistant, 10 PCS - AliExpress
Specifications:, Material: Felt Cloth( with back adhesive tapes), Size: approx. 7.87 x 11.81 x 0.08(20cm x 30cm x 0.2cm), Type: Fabric Sticky Back
Luxtrada 6 Pieces Black Adhesive Back Felt Sheets Fabric Sticky Back Sheets, Self-Adhesive, Durable and Water Resistant, Multi-Purpose for Art and
Sticky Felt // Adhesive-backed Felt Sheets – threddies
Adhesive Backed Felt // Adhesive Felt // Adhesive Backed Chunky Glitter // Self Adhesive Wool Felt // Sticky Felt // Wool Felt Adhesive
Self Adhesive Felt Sheets Sticky Back Felt Sheets For Crafts - Temu
a4 size black fabric sticky back
Luxtrada 6 Pieces Black Adhesive Back Felt Sheets Fabric Sticky Back Sheets, Self-Adhesive, Durable and Water Resistant, Multi-Purpose for Art and Craft Making, Furniture Protector Pads
3PCS Self Adhesive Felt Sheet with Adhesive Backing, Peel and Stick A4 Size
Sntieecr 10 Pieces Black Adhesive Back Felt Sheets, 1.6mm Thickness Fabric Sticky Back Sheets, A4 Size 8.3 x 11.8 (21cm x 30cm) for DIY Craft and Halloween Decorations : Arts, Crafts