Big Fat Hen is always committed to bringing you fresh and fun designs combined with functionality. Our 100% organic cotton sleep sacks are just that, a sack that is fun but has so many practical and functional benefits. The Big Fat Hen sleep sacks not only feel amazing inside and out but help protect your baby and the earth.

The big fat hen sleep sack is a wearable blanket so you can dress your baby the same way you would if you were using traditional blankets. The following is an indicator of when to use the different weights of big fat hen sleep sacks.