Is the BUFF® multifunctional neck gaiter available in just one size? October 15, 2021 15:46 Updated Our multifunctional BUFF® neck gaiter is available in two sizes: child and adult. Related articles How many sizes of BUFF® Filter Mask are available? How should I wash my BUFF® accessory? How is the multifunctional BUFF® neck gaiter produced? CONTACT US How can I return a BUFF® product?