- MADE FOR WARMTH. Mainly crafted in sherpa within 100% polyester. Back area is crafted in quilted padded fabric within 100% nylon. Features velvet lining and a puff-up design provide extra warmth and softness for your pet. - THERMAL ATHLEISURE. Great combination of spliced fabrics brings out the fashion sense. Shielding your pet from the cold weather, your pet deserves to lounge in this toasty-warm and stylish black pajama! - WARM PROTECTION. All-coverage protection, perfect jumpsuit style to keep your pet extra warm and cozy during winter! Windproof and thermal functions, for any winter outdoor adventures such as hiking, camping and picnic.