Using this analysis

upper section made of windproof and breathable GORE-TEX INFINIUM™ WINDSTOPPER® Breeze

Brushed on the inside for extra warmth and comfort

Certified to both snow and bike helmet standards

Park Tool, 100-3D, Professional Micro-adjust clamp, For PRS-2, PRS-3, PRS-4 and PRS-4W stryke Using this analysisA durable, versatile, easy to use clamp built for everyday shop use. Features a cam actuated micro adjust clamping system for easy entry and exit, which opens to fit nearly any tube from 23 to 76 mm (7 8" to 3"), including aero tubes. With infinite adjustability, there's no need to worry about accidentally crushing or damaging delicate carbon fiber tubing. Narrow clamping jaws fit into tight areas or onto short seat posts. The 100 3D is built to last,