Mier Bags & Accessories — Hydration Vests, Belts & Sports Bags on Sale

Buying Guide

Hydration Vest, Running Belt, or Sports Bag?

Choose by distance and load. A Mier running belt is the affordable pick for short runs and phone-plus-keys carry. A hydration vest with soft flasks suits marathon training and trail sessions where hands-free water matters most—look for vest fit adjustability and bounce-free flask pockets. For gym, travel, and team use, Mier's duffels and backpacks add laptop compartments and shoe pockets at prices well below big-brand equivalents. Starting at $12.50, these are some of the cheapest performance accessories in our catalog. Pair a belt or vest with Mier running shorts and tops, compare against BUILT bags for everyday use, and apply coupon CRUMB15 at checkout for extra savings.