What Our Gearhead® Experts Are Saying: “The Bum Bag Mini W3 is my go-to when I just need the basics—phone, wallet, keys—without lugging a full backpack. It’s lightweight, waterproof, and super versatile. I can wear it crossbody on city walks or around my waist when I’m out exploring.” We love the Rains Bum Bag Mini W3 for its blend of minimalist style and everyday utility. Built from Rains’ signature waterproof PU-coated fabric, it keeps our essentials protected from rain, splashes, and the unpredictability of travel days. The clean silhouette and versatile design let us wear it crossbody, around the waist, or over the shoulder depending on the moment. The zippered main compartment offers easy access to must-haves, while the adjustable webbing strap and quick-release buckle make on-the-go adjustments effortless. Compact yet practical, the Bum Bag Mini W3 is our grab-and-go solution for urban commutes, travel days, and light adventures when we want to keep things simple, secure, and dry.