Building on last year’s Boa nerve, Booq is back with Boa nerve stealth ($195), a more rugged version for use in harsher outdoor conditions. Featuring an upgraded heavy-duty tarpaulin exterior and rubberized zipper pulls, the upgraded design is more weatherproof and durable in all sorts of outdoor settings. The bag also features a magnetic strap system to easily switch from loose to secure, along with a stabilizer strap for an ultra-tight fit,…