Myles Graywrote a review of Five Ten Moccasym Climbing Shoe on May 20, 2019
Familiarity: I've used it several times
Initially, you'd think that some slip on climbing shoes would just pop right off your feet as soon as some weight is placed into the holds. Not these though. Five Ten has done a great job shaping the shoe to create little pockets that grip around your feet to keep the shoe securely secured to your foot. As well as using their Stealth C4 rubber that keeps the shoes securely secured to the holds! These are perfect gym/long climb shoes. As long as the shape fits your foot (which is always an issue with climbing shoes ¯\_(ツ)_/¯).