Manduka's UnfolD strap has a double square ring buckle and is made from natural, unbleached cotton. Slightly narrower and thinner than the more traditional Manduka AligN Strap, the UnfoLD strap is easy to take on the go.Yoga straps are a great addition to any practice! Providing extra length so you can reach further and stretch deeper, straps are a helpful tool for yogis of all levels. If you're using a strap to lengthen your reach for stretches that are just a bit too tight, the shorter length should suit you. If you're doing a restorative practice, the longer strap will give you more options.