If your laptop or tablet is a bit larger then the Medium Canfield B is perfect for you. With enough space for a 15" laptop, you'll be able to take everything you need anywhere you go. This size has two side water bottle pockets. 

• Each medium bag is 42cm x 30cm x 12cm. 
• Outer material: weather resistant matte nylon (triple coated)
• Base material: weather resistant canvas (triple coated)
• Lining material: matte nylon
• Hardware: galvanized, smoked, branded metal
• Straps: cotton webbing adjustable shoulder straps and wide loop handles, v-factor comfort
• Zips: Sturdy durable chunky zips allow easy glide, quick open/close for all ages