Arms Up Swaddle With Muslin at Aaron Copeley blog How to Swaddle a Baby PregnancyAndBaby.ie Best Swaddle Blankets How Do Swaddles Work at Christopher Lewis blog. This swaddle blanket is beyond perfect for any sweet baby on the way. Made out of a super soft stretchy knit. Matching knot hat fits newborns, and is available in the drop down of the listing. The fabric we used is super stretchy, made from bamboo viscose, wait until you feel how soft it is! Swaddle blanket is 47" X 47" perfect for light weight swaddling, stroller blanket, and nursing cover! Pattern of the blanket is only on one side, beautifully finished around the edges for the perfect professional look! 95% Viscose from Bamboo, 5% Spandex