Sea to Summit Frontier Collapsible BowlPremium, EU food grade materials glass reinforced nylon 66 and silicone rubber combine with clever design to create light, functional camp dinnerware. Each bowl now has a rim so you can hold it securely and a curve between the base and sidewalls that matches Sea to Summit spoons. The Medium Bowl is designed to nest with the collapsible 2L Pouring Pot. Sea to Summit was the pioneer in collapsible tableware the Frontier series is the next step in this