these sleepsack be great . we have be use they ever since we baby be too old for swaddle . they come in fleece as well as the t-shirt knit -lrb- great for spring and summer -rrb- , and keep you baby snug and cozy without any worry about suffocation or they kick it off in the night and get cold . a bonus : the sleep bag design keep crib-climber from be too mobile !