EASY CARE:Our sleeping bag baby is machine washable up to 40ºC and can be tumble dried at low temperature, can be washed again and again, it is durable and keeps its shape very well. [All year universal ] Our baby sleeping bag is 2.5 tog, super soft, comfortable, provides a wonderful sleeping condition, for room temperature below 20 ?, sleeveless design.So it can be used in all 4 seasons. [Excellent zip design] The zip is nickel-free to prevent allergies. The button design and collar prevent chin scratches and are very easy to put on and take off. [Four sizes] Please choose the right size according to your baby's height:S is suitable for baby 0-6 months . M is suitable for baby 6-12 months. L for baby 12-18 months. XL for baby 18-24 mona. [100% cotton, good warmth] Warm lined baby winter sleeping bag in sleeveless, high quality, safe and healthy sleep for your baby with constant temperature in baby sleeping bag.