After a long search, I finally found skates that do not press. They sit quite super, lock system is also good. I was out on the Boa system, but what use to me this great system when the shoes squeeze in the calf. The Celena are insanely fast, so I have in addition to the other guards a matching color helmet I gekauft.Finde good that K2 offers everything fits. For shoe size: I'm wearing normal size 37 and have taken the skates in size 38. To adjust with Skater Socks perfect.