Surge Ascent

Insulated high-flow hydration Surge valve delivers a solid stream, then self-seals to eliminate drips and spills Engineered Cool: Tri-layer insulation combines an external reflective heat shield with two layers of insulating foam to keep liquids cool Easy to squeeze thanks to its flexible, ultra-light materials and the unique grip groove Easy To Clean: The cap's two pieces, the lid and the valve easily separate for top-rack dishwasher cleaning Attributes Insulation Yes