The sleeves are made of knit material and have some pilling. The shoulder button design makes it easy to put on and take off. The fleece lining makes it comfortable for outdoor play in winter. SLAP SLIP trainer with an active design, size 80, made of 100% cotton for a comfortable feel. - Brand: SLAP SLIP - Size: 80 - Color: Gray/Navy - Design: Active print - Material: 100% Cotton - Washing instructions: Machine washable Thank you for viewing.