Enhance the stability of your chair with the Vibram® Ball Feet rubber tips. These ball feet are designed in collaboration with Vibram to prevent chair legs from sinking into mud or sand, making them ideal for outdoor use on various terrains. The 45 mm size is compatible with the Chair One (made from 2015), Chair Two, Chair One Mini, Speed Stool, and Chair Zero. The 55 mm size is compatible with Chair One (re), Chair One High-Back (re), Chair One XL, Swivel Chair, Sunset Chair, Savanna Chair, and Bench One. Each pack includes a storage bag. Helinox is a global outdoor furniture brand known for its innovative products using ultra-lightweight aluminum poles.