Please measure the circumference of your finger before purchase: Size S fits finger circumference 3.8–4.5 cm. Size M fits finger circumference 4.5–6.5 cm. Size L fits finger or thumb circumference 6.5–7.7 cm. FLEXIBLE SUPPORT AND COMPRESSION: These finger sleeves provide gentle support and moderate compression, helping stabilize fingers during daily tasks. They help relieve pressure on finger joints caused by arthritis, sports injuries, tendinitis, swelling, or mallet finger. BREATHABLE AND COMFORTABLE: Made from lightweight neoprene and breathable polyamide fiber, these sleeves are washable, reusable, and easy to carry. The splint stays in place without slipping or bunching, offering protection for various finger injuries day and night. ADJUSTABLE AND RELIABLE: The adjustable hook-and-loop strap allows for a customized fit. Easy to put on and remove, it provides secure support and remains stable during physical activity, allowing better focus and performance. ALL-DAY USE FOR ALL FINGERS: Designed to leave other fingers free, this splint supports natural movement while aiding recovery. It can be worn on the left or right hand to reduce stiffness in the index, middle, ring, little finger, or thumb. Suitable for daytime or nighttime use during activities such as typing, cooking, driving, resting, or sleeping.