Functional-Position Hand Splints. Save time with these ready-to-use, molded resting splints made of KaySplintT" III. Major modifications can be made by dipping parts in hot water (160°F) for 60 seconds. Minor modifications are easily made with a heat gun. Deluxe splints include a selfadhesive strap kit which includes wrist, forearm and finger strap. See the measuring chart (right) for correct size. Latex free.