We’ve taken our award-winning PRVKE line and made improvements to features and comfort. We started by updating the back panel and shoulder straps. Implementing new shapes and padding to create a more comfortable, breathable, and versatile carrying experience for all body shapes and sizes.  Quick side camera access Laptop sleeve Magnetic tote handles Weather resistant zippers Expandable water bottle/tripod pocket Secure passport pocket Removable camera protection Materials: Waterproof Tarpaulin and Robic 1680D Ballistic Nylon. Weather Resistant Zippers. PRVKE 21 Dimensions: 43 X 28 X 17 cm (17"H X 11"W X 6.5"D) Volume: 21 L to 25 L (roll top fully extended) Weight: 1.3 kg (2.8 lbs) Laptop Sleeve Dimensions: 33 X 24 X 2.5 cm Tablet Sleeve Dimensions: 32 X 24 X 1.25 cm   PRVKE 31 Dimensions: 48 X 30 X 18 cm (19"H X 12"W X 7"D) Volume: 31 L to 36 L (roll top fully extended) Weight: 1.5 kg (3.4 lbs) Laptop Sleeve Dimensions: 34 X 25 X 2.5 cm Tablet Sleeve Dimensions: 33 X 25 X 1.25 cm   PRVKE 41 Dimensions: 53CM X 32CM X 23CM (21”H X 12.5“W X 9”D) Volume: 41 L to 46 L (roll top fully extended) Side Access: 10 Inches Weight: 1.7 kg (3.7 lbs) Laptop Sleeve Dimensions: 34 X 25 X 2.5 cm Tablet Sleeve Dimensions: 33 X 25 X 1.25 cm