With a 70% Organic Bamboo and 30% Cotton fleece blend your Baby Bjorn Carrier One Drool Covers offer the best mix of natural anti-bacterial Bamboo Kun with a soft Cotton feel, for all-day protection of your babys sensitive skin (see images). Your Baby Preferred One piece set is easy to install. Place the shoulder straps of your Babybjrn carrier through the Drool Pad Opening and adjust to fit. Next, with the carrier empty, place the suck pad where it provides the most protection & comfort for your baby and attach it where it will move the least while providing the most comfort. When you arrive home from your adventures, simply unfasten the pads, toss them in the washer with your babys other clothing to keep your Babybjrn carrier clean, safe and ready to cradle your baby during your next outing. Finally, part of your purchase goes to St. Jude Childrens Research Hospital to help children around the world so you can feel good about your purchase.