HALO Early Walker SleepSack Wearable Blanket Lightweight Polyester Knit - Pink - Extra Large 100% polyester lightweight knit Size medium fits 16-24 lbs, size large fits 22-28 lbs, size x-large fits 26-36 lbs Use over regular sleepwear to take the place of loose blankets Sleeveless design reduces the risk of overheating Unique foot openings allow for mobility while babies are awake, keeps little feet covered and warm while sleeping HALO supports non-profit organizations like First Candle/SIDS Alliance and The Canadian Foundation for the Study of Infant Deaths