Organize all the stuff you need for your training. The large arena One Go Backpack 45L with a top-loading design makes packing and accessing your belongings easy. The roomy main compartment and four external zipped front pockets offer various storing options. Breathable and watertight inserts are engineered to keep wet and dry items apart. Featuring a smart laptop sleeve and two external bottle pockets. Aquabreathe, arena's new wet management system, combines breathable and water-repellent fabrics to create an advanced ventilation system that keeps water out and your gear dry. The breathable back panel ensures sweat-free transport. Equipped with a practical strap for easy attachment to a suitcase, this backpack is easy to hang with the included carabiner. The water-repellent bottom and main fabric offer protection from moisture and dirt. Dimensions: 19.7 in x 15.7 in x 9.8 in, 45 liters.