12 x 11 x 5 inches Padded main compartment has a drop-in pocket, a mesh pocket for visibility, an electronics pocket, pen sleeves and a secure zippered pocket Interior sleeve holds most 13 in. laptops, iPads and small electronics Large front flap features a zip pocket, a reflective panel and a webbing bike light mount (light sold separately) Side pocket carries a water bottle Fully adjustable, no-slip shoulder strap and top-side carry handle Made of a tough yet lightweight 600-denier recycled polyester with a slick 200-denier, polyurethane-coated polyester liner Fabric is treated with a Durable Water Repellent finish to repel moisture and stains