Keeping bakery goods in a waxed bag or wrap is beneficial because the wax coating provides 
excellent resistance to grease and moisture, which helps to maintain the freshness of baked goods by preventing them from becoming soggy or losing their texture, while also ensuring they don't stick to the bag due to their non-stick properties; this is particularly important for pastries and cookies with high fat content. 
Bag dimensions - 
Small: 8 1/2" x 8 1/2" x 1 1/2"; (pastries, cookies, small baked items)
Medium: 11 3/4" x 11 3/4" x 2 1/2" (small loaves, buns, medium sized baked items, and all small items)
Large:15 1/2" x 15 1/2" x 3 1/2" (artisanal loaves, long bread loaves, and all the items from smaller sizes)
Made from 100% Pre-washed Cotton and Wax (Coconut wax, Beeswax, and a miniscule amount of FDA food-grade paraffin); gluten-free, toxin-free, paraben-free, phthalate-free, and cruelty-free.