Xlab Stealth Pocket 400c - Bag for the top tube

When every second counts and marginal gains are the difference between a personal best and an average performance, it’s essential that your gear works with you – not against you. XLAB specializes in just that: delivering advanced hydration, storage and aerodynamic optimization solutions for triathletes and competitive cyclists who don’t want to leave anything to chance.

The XLAB brand is known and recognized in the triathlon world for their uncompromising approach to functionality, integration and performance. Their products are developed with a focus on improving the cyclist's position, making storage and hydration easily accessible while minimizing aerodynamic drag. The result is well-thought-out systems that give the rider a real advantage - whether it's an Ironman, a time trial or a quick training ride.

One of XLAB’s biggest focus areas is hydration – and it makes perfect sense. In triathlon, hydration is a crucial factor for performance, and it needs to be easy, fast and without breaking your aerodynamic position. XLAB offers a wide range of mounting solutions so you can place your bottles exactly where it suits your bike and riding style.

For example, there are solutions for mounting between the bars of the aerobar – also called BTA (Between The Arms). This is not only practical, but also aerodynamic, as the bottle sits in extension of the body and minimizes turbulence in front of the handlebars. This type of setup makes it possible to drink without changing the riding position, which is ideal for both competition and long training sessions.

Additionally, XLAB also offers behind-the-saddle mounts, which allow space for one or two additional bottles behind the rider’s back – a popular choice among long-distance triathletes who need to be able to carry large amounts of fluids or sports drinks without straining the frame geometry. These solutions are typically adjustable and compatible with many saddles and bottle types, making them very flexible.

XLAB hydration solutions are designed with ease of use in mind, without compromising on weight or stiffness. Most systems are designed to stay firmly in place – even over cobblestones, potholes and sharp turns – so you never lose your bottle in the middle of a sprint or during a crucial segment.

Another core competency at XLAB is storage. When you need to take gels, tire levers, multitools or CO2 cartridges with you on the go, it's important to have them easily accessible - but without disrupting aerodynamics. XLAB has therefore developed a number of intelligent storage solutions that mount discreetly and securely on the bike.

It can be aero boxes for the frame, small containers between the hangers, or bags that fit precisely behind the saddle. Most solutions are made with a focus on low weight, low profile and easy access, so you don't have to fumble for your equipment on the go. Instead, you have everything organized, easily accessible and placed as smartly as possible.

For triathletes who race in pocketless race suits, being able to carry energy and spare parts without compromising speed or comfort is a game-changer. At the same time, many of XLAB's storage solutions are modular, so you can put them together to suit your needs and easily adapt your setup from training to competition.