The CrossGrips are made of steel, are highly durable and feature an L-shaped grip to allow for regular Pull-Ups and Chin-Ups as well as neutral grip Pull-Ups. They can also be used as Push-Up Bars. The RYZE UPs are Pull-Up bars only, are made of plastic and are lighter. Their rotating grips give you more options for Pull-Ups, but they are less durable. Both have a maximum weight capacity of up to 250lbs.