Men's Pennant RFL OTC Ultra-Lightweight Kitchen & Dining collapsible flask features our classic

collapsible flask features our classic one-piece silicone bite valve for rapid hydration on race day

and make memories that will last a lifetime

Designed for everything from everyday activities to minimalist adventures

super comfy

Men's Pennant RFL OTC Ultra-Lightweight Kitchen & Dining collapsible flask features our classicMinimalist checklist: fit, comfort, style. The Pennant sock checks all the boxes with its next to skin, no slip boot connection, fatigue easing arch support, Merino Wool performance, and a dash of drop needle design. It's the best sock for skiing and riding because it's also Guaranteed for Life.