This premium pajama set is made with an eco-friendly TENCEL Modalraglan fabric that is stretchy, silky, lightweight, soft, and comfy. TENCEL Modalraglan fibers remain soft over time and are able to withstand repeated wash and dry cycles, allowing fabrics to retain their softness This pajama set is made without tags and with smooth seams for extra comfort. Washing Tip: We recommend using Mesh Laundry Bag in washing machine as this Modalraglan fabric is delicate as silk, wool etc. This will preserve your clothes from piling, snagging and stretching. Please, protect these precious items your baby is loving. For child's safety, cotton sleep sets should always fit snugly. Loose fitting garment is more likely to catch fire. All of Vaenait Baby's products are strictly under Consumer Product Safety Rules.