We often hear about baby’s arms getting cold while wearing a sleeping bag, and the clever team at ergopouch have designed the perfect answer - arm warmers!arm warmers are a bolero style jacket with warmer sleeves than the body. They are designed to go over a baby sleeping bag to provide extra warmth during the night.rather than adding loose bedding or waking baby to add more clothing, you can add the arm warmers over the top of the sleeping bag before you go to bed.room temperatures always drop overnight. Now you can add extra layer if needed without disturbing sleep. Great if doing a dreamfeed or just layer up straight away if its chilly in the house.fabric:pure organic cotton fleece sleeveslight organic cotton stretch jersey body.sizes:2-12 months12-36 monthsfire labellingdue to the untreated cotton used in these bags and the loose fitting style, these arm warmers are labelled high fire danger. Please note these garments are not actually required to be labelled under the fire labelling standard, it is purely for customer information. Always keep your child at least a metre away from any heat source. This garment is designed for use in bed.