Design: Easy attachment on most kayak track systems to create a place for drinks when nowhere is available Highly versatile cup sizing accepts stainless steel tumblers, big water bottles, Naglene (R) bottles, 12 oz. cans, etc. Premium materials designed for harsh outdoor environments Well-suited for drop-in of small items with large depth Compatible with YakAttack MightMount's, GearTrac, and most other kayak track systems from Scotty Fishing Products, RAM Mounts, and YakGear