Full disclosure: I'm a full-grown adult but fortunate enough to have smaller feet which made me ecstatic to find out I could grab a pair of these guys. I also own the Futuras, which also has No-Edge technology (which I love by the way) but is shaped more aggressively. I bought this pair as a gym climbing shoe, reserving the Futuras for outdoor use.
So far, I'm loving the Maverinks. They are mostly flat-soled making them extremely comfortable, while the No-edge tech makes me feel like I'm climbing better with more precise footwork. Edging, smearing, and toe hooks feel amazing in them. My only complaints would have to be the elastic gore that helps to secure the shoe in place; it has the tendency to roll up on itself when slipping them on, which feels slightly irritating. It can be quickly fixed in a few seconds though, which isn't a dealbreaker but annoying either way. Also for more demanding heel hooks, I can sense a tiny bit of movement in them when putting pressure on the heel. Not a huge deal though.
My street shoe size is a US 9 (EU 42) and I sized these in a 39 which is extremely tight for optimal performance (although they're still very comfortable in my opinion for a few burns). For more "tolerable" comfort, I would go 2-2.5 European sizes down.
(Posted on 4/3/2017)