Made of highly-recyclable Tyvek®, a lightweight, water-resistant substrate that is commonly used on the side of buildings, MIXT bags and totes act a lot like fabric with a surprisingly paper-like feel. Roomy and travel-friendly, these pouches are the perfect carry-all. Use them for just about anything — travel, gym gear, make-up, wet swimsuits and sunscreen, school/craft supplies, etc. The Reversible Totes, weighing just 5 ounces and folding to the size of a small book, are a must have for travel, gym, beach, or poolside. But don’t be deceived by their delicate feel, these totes are strong (able to hold over 40-pounds)!