The ergoPouch Sleep Suit is a safe way to keep baby warm without the need for extra blankets. You can use the Sleep Suit in the cot as a sleeping bag, then convert into legs using the zippers, making the transition from cot to pram or car an easy one. Perfect for little walkers. The 3.5 TOG Sleep Suit is designed for Winter temperatures and is made with an Organic Cotton sheeting outer layer and 100% cotton filling. It also has long cotton fleece sleeves and fold over mitts for warmth.