GUSUMIN baby safety goods. - Brand: GUSUMIN - Material: 100% Polyester Thank you for viewing. I purchased this to prevent my baby from rolling over during sleep, but it didn't suit my child, and I only used it for a short time, twice. After opening and using it, I washed it with Sarasa laundry detergent and stored it at home. Please understand that there may be some fold marks. When shipping, I will ship without the box or instruction manual. Please refrain from purchasing if you are sensitive to used items. Returns and exchanges are not accepted.