A

B
Bunting Bag - Interchangeable term meaning sleep sack, infant sleepers or wearable sleeping bag.

C
Chambers - Sections sewn within the sack (bag part) to hold the down.

D
Down - Unlike regular feathers, down is a fine layer of small soft feathers. Down is known to be an excellent insulator and used in clothing, bedding,
pillows and other materials. 

Down proof - Fabric that is woven to prevent down or feathers from coming out.

Y
Yoke - The top part of the sleep sack that looks like a bib on both the front and back sides.