The purpose of a wrist wrap is to provide support to the wrist joint during heavy or max effort lifts in pressing movements and overhead lifts. During these movements, thewrist can be pulled into excessive extension under load and result in compromised mechanics, possible injury, and failed lifts.
Yes Wrist wraps are washable and we recommend washing them often. Just wash them in the sink and let them air dry. One thing to keep in mind is that a gym is typically going to be dirty even though the floors and equipment may be cleaned daily