Swigzy cup holder adapters. Designed to hold large water bottles. Expanders hold most 20-40oz. bottles including, but not limited to:
Hydro-Flask: 32 oz. and 40 oz.
Nalgene: 30 oz., 32 oz., 38 oz., and 48 oz.
Yeti Rambler: 20 oz., 26 oz., 30 oz., and 36 ounce (14oz. will NOT fit)
Klean Kanteen: 40 oz.
Camelbak: 32 oz. and 40 oz.
Takeya: 32 oz and 40 oz.
Healthy Human: 32 oz and 40 oz.
Gatorade: 32oz