We offer various rubber compositions. Vibram* includes 'Grip,' which is a supportive rubber, 'XS Edge' which is a hard rubber great for edging, and 'XS Marchiata' (aka 'XS Flash') which is new to the market. It is a flexible rubber meant specifically for gym climbing.
Recently added to the arsenal is Unparallel*, formerly the team from 5.10. We carry RH 4.2, which offers precision for edging as well as stickiness, and RS 3.5 which is a softer and grippier compound.
Do you have other rubber recommendations? Let us know!