Comfy Slip-Ons For Your On-The-Go Kiddo The Sierra Designs Youth Down Slip-Ons are made with 800 Fill DriDown, so you can ensure that your child's feet will stay toasty and comfortable no matter what they get into. These Down Slip-Ons are made from 100% recycled polyester taffeta and a durable oxford sidewall, so they're tough enough for play time. The ribbed knit cuffs make for easy on and keep the Slip-Ons in place when they're on the move. These Down Slip-Ons take the struggle out of keeping your child's feet comfortable, so you can focus on the more important things. Features 800 Fill DriDown(TM) 100% Recycled Polyester Taffeta Silicone bottom sole grip for added traction Tricot lining Elastic cuff to seal in warmth Durable oxford sidewall PE foam midsole for lightweight cushioning C0 PFC-Free DWR Materials Shell: 100% Recycled Polyester Taffeta with PFC-Free C0 DWR Fill: DriDown Liner: 100% Polyester Tricot Tech Specs - Size M Weight: 5.37 oz / 152 g