This premium pajama set is made with an eco-friendly TENCEL modal fabric that is stretchy, silky, lightweight, soft, and comfy. TENCEL Modal 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. All of Vaenait Baby's Pajamas are tight-fitting and there are No-Flame Retardants. 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.