adidas Climacool Strength 2 Backpack With a sleek athletic feel, the XXL sized ClimaCool Strength II Backpack is the best choice for a year-round sports pack. The ClimaCool Strength II pack features a freshPAK ventilated main compartment, a back compartment with a padded laptop sleeve for up to a 15.4'' screen, 2 tricot-lined Media Safe pockets. Also has a side water bottle pocket, and a front zippered pocket with deluxe organization. Die-cut EVA foam shoulder straps featuring LoadSpring with ClimaCool technology and padded air mesh back panel help keep you cool and your load light. The ClimaProof water resistant base of the pack will keep your stuff dry from a wet or dirty field or gym floor.