Baby Sleep Sacks

A sleep sack is a wearable blanket: a sleeveless or long sleeved bag that zips over pyjamas and replaces loose blankets in the cot. The safety case is simple and it is the reason health guidance points parents this way. A loose blanket can ride up over a small face, while a sack stays where it is put and still lets legs kick and hips move. The buying problem is not finding a sack, it is matching warmth to the room. That is what the TOG rating is for, and it is also where most first purchases go wrong, because a bag bought for a cold house overheats a warm nursery and a summer bag leaves a winter baby cold.

The twelve sacks below cover the real spread of the category. Woolino's merino bags carry one child from 2 months to 2 years with underarm snaps instead of outgrown sizes. HALO and Burt's Bees Baby cover the cotton mainstream at opposite ends of the price ladder. Kyte Baby's walker and Woolino's footed bag serve toddlers who stand, cruise and climb out of cots. Love to Dream covers the newborn weeks with its arms up shape, aden + anais covers hot rooms with single layer muslin, and Hudson Baby covers cold rooms with plush. Every pick is a real sack sold on Amazon with a verified listing photo, and every warmth claim is the maker's TOG or season description, never a guessed number.