Trim-to-Fit Gel Tubing Here is the state-of-the-art trim to fit gel tubing that we recommend if you have corns, calluses, or scars on either your toes or fingers. Aktive Trim to Fit Gel Tubing absorbs pressure and friction to help prevent and ease pain from calluses, ingrown nails and blisters. Simply cut the soft ribbed knit fabric to the desire length. Inside is fully coated with soft-medical grade vitamin-enriched mineral oil gel that softens, soothes and protects fingers and toes.