Sizing and Ordering the Nastia Russina Heritage Double Buckle Gymnastics Grip by US Glove. Nastia's version of the popular Reisport Swiss style hand grip. This grip is the same in size and shape with two finger holes sewn-on leather-wrapped dowel and a double-buckle wrist closure. It features our very durable leather made to our specifications. This grip is a real knock out at a much lower price! Sold in pairs. We recommend the use of wristbands with these hand grips. US Glove sizing is different from grip to grip. Please make sure you're ordering the correct size for your grip! To order the RKO uneven bar buckle grips, take a measurement, in inches, from the wrist to tip of the middle finger. Size Measurement 00 5 5/8" 0 6" 1 6 3/8" 2 6 5/8" 3 6 15/16" 4 7 5/16"