Keep your stuff secure on crowded commutes and daily adventures with the Osprey Packs Transporter Roll Top 25L Backpack. This durable daypack is designed to help you comfortably lug the essentials for a day of work or play, and features a secure roll-top closure that works with the water-resistant fabric to keep out moisture when your bike to work is a bit rainy. Speaking of the fabric, it's more than durable enough to withstand the constant bumps and bruises of crowded subway cars and buses, while a padded internal laptop sleeve keeps your computer or tablet safely stashed as you bike hard on city streets or get knocked around on bumpy train rides. The AirScape mesh back panel ensures breathable comfort in warmer weather, and the adjustable webbing belt, shoulder straps, and sternum strap make it easy to stay support even when you're traveling with heavier loads. A zippered stash pocket keeps smaller everyday items within easy reach, and a blinker light attachment helps you stay safe when you're riding or walking at night.