Level 1 John Doe XTM Air Hip Armor comes stock in all John Doe Jeans, and can be upgraded to a thicker Level 2 option for even more protection.

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John Doe's XTM Air armor is made of molded TPU and is lightweight and flexible. Level 1 comes stock in most John Doe riding jeans, and can be replaced and upgraded with Level 2. 

The difference is about 6.5mm thickness for Level 1; and 9.5mm for Level 2.

Universal shape might work in other brands as well.