Apidura Racing Bolt-On Top Tube Pack 1L The one-litre Apidura Bolt-On Top Tube Pack is aimed at riders who need easy access to their essentials, whether you're racing or on an adventure. It uses an innovative magnetic flip-top opening that makes it quick and easy to access your phone, food or race items. The pack is made from Hexalon, a lightweight, waterproof laminate, so not only can you keep your items close to hand but they'll be protected from the element too. The pack secures to the top tube bosses found on gravel and adventure bikes and for ease has two mounting positions to choose from, so it will fit different frame sizes and geometries. The attachment bolts are supplied with the pack. The fabric is durable and to prevent damage to your frame, closed-cell padding has been used and the front attachment points are reinforced with Hypalon, durable rubberised nylon. Your pack will remain secure regardless of the terrain you'll encounter on your journey. The flip-top is large enough to cover the contents of the pack but when opened will give you clear visibility of the items inside so you don't have to scrabble around to find anything. An added convenience is the protected cable port that allows you to charge your electronics on the go. As part of the outer shell, there are specially designed, reflective features to improve side-on visibility when you're riding in low light or in darkness.