Lululemon Fast and Free Backpack *13L - Wild Bluebell - lulu 。Designed with outdoor adventures in mind, this hydration-compatible backpack keeps you cool and fueled.Durable fabric is easy to wipe clean Waistband straps: Waistband straps provide stability for a low-bounce run Customize the fit: Customize the fit with the adjustable sternum strap 360° reflectivity: Helps to keep you bright in low light Secure your stuff: Interior compression straps keep your essentials from bouncing around Dimensions: 25cm x 9.5cm x 41cm (9.5\" x 3.5\" x 16\") Volume: 13L