Ergo Ultra pads are available in 10mm for a snug comfortable fit. FEATURES: New foam that resists being crushed for longer periods of time. Improved surface durability. Superior grip with a molded in textured surface. Compatible with both the Ergo armrest kits. SPECS: Dimensions : Ergo (108.4mm x 87.5mm) Stack: 10mm Compatibility: Ergo Weight: 10mm: 37g