PURCHASE BEFORE: Please measure the circumference of the finger, Size S: Accommodating the circumference of finger 3.8- 4.5cm. Size M: Accommodating the circumference of finger 4.5 - 6.5cm. Size L: Accommodating the circumference of finger or thumb up to 6.5 - 7.7cm. FLEXIBLE SUPPORT AND COMPRESSION: These fingers sleeves can effectively holds your fingers, providing gentle support and moderate compression. It keeps your finger stable while performing tasks which alleviates pressure on the finger joint from arthritis, sports injury, tendinitis, swelling or mallet fingers BREATHABLE AND COMFORTABLE: Constructed with lightweight neoprene and breathable polyamide fibre material, washable and reusable, compact and convenient to carry, the trigger finger splint will not slide or bunch, protects all types of finger Injuries all day and night time ADJUSTABLE AND RELIABLE: The adjustable hook and loop strap can easily adjust the finger splint to achieve the best fit. Easy to put on and take off, provide firm stability and comfort, it will not loose easily even in strong exercise, thus you can better focus on your exercise to get a better performance ALL DAY USE AND ALL FINGER AVAILABLE : The finger splint leaves the remaining fingers unhindered allowing you to more easily complete daily tasks. it can be worn on either the left or right hand to reduce the stiffness of the index finger, middle finger, ring finger, pinky or thumb. You can wear it at night and during the day while regular activities, including typing, cooking, and driving, resting or sleeping