The Capsule protects your gear with the perfect balance of size and strength. Constructed of compression molded EVA (same foam used in athletic shoes), all edges are reinforced with a padded perimeter and rigid outside edge to take the knocks so that your equipment doesn''t have to. It''s super slim design is perfect for extra backpack protection or use on its own. An optional shoulder strap and power pocket are also available. Slim design slips easily into backpacks Secure, zippered opening provides easy and quick access while carrying or in backpack ID Window for quick identification. Optional power pocket for charger and accessories (Sold Separately) Optional shoulder strap (Sold Separately) Printable area: 2.75" tall by 3.5" wide for customization / logo 13"/14" size has an extra removable internal pad (remove for larger laptops...also fits 2016/17 15" Macbook Pro!)