For half the weight of an average carabiner, you can jam with both security and comfort in all cracks! Thin profile SLPITTERS are both fast on and off and "fit" into cracks like tape while allowing skin to breathe and eliminating ongoing expense and trash. Friction pads across knuckles and on the back of hand provide comfort and thus afford you time to securely set each jam - improving your crack climbing efficiency and confidence. Hook-n-loop wrist straps lock you in... but easily allows removal (if desired) for belaying or the next face climbing pitch. Can be clipped to harness or rack or easily folded and carried in pocket. Recommended for new, occasional and seasoned crack climbers who will appreciate SPLITTERS just as much as they do sticky rubber on their feet.. For best sizing, lay your hand flat, fingers together & measure the circumference around your knuckles - easily done by wrapping a sheet of paper around your hand which then can be laid alongside a ruler. See sizing chart. Made in China.