Sea To Summit Frontier UL Collapsible Cup - 12oz

Sea To Summit Frontier UL Collapsible Cup - 12oz

Marsoni

M251S

$14.95

Get it in 3 business days with 1 day shipping. Friday, May 29

Sea To Summit Frontier UL Collapsible Cup - 12ozBuilding on over a decade of experience in collapsible drinkware, the Frontier Collapsible Cup has been engineered to be sleeker, more ergonomic and lighter. Glass reinforced nylon 66 is used for the base, rim and center ring providing more stability and allowing you to grip the cup more easily. EU food grade silicone rubber sidewalls let the cup shrink down to less than 2cm in height. Designed to nest stack, these cups really do fit in anywhere Best

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I have them in every color and used to get them from Sams, but they stopped selling them and I was lucky to find them on Amazon. Got all colors again. They stay, it's all I'm gonna say! And don't show in any of my tennis shoes. Absolutely love them and wear them until they get holes. They last a LONG time too. They're on the thin side and my foot loves them because they tend to get hot. There's no shrinking, they wash great with exception of the white ones I couldn't manage to keep white - they turned a bit greyish.

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Reviewed in the United States on January 4, 2026