City Commuter Waterproof Convertible Laptop Bag

Features: Large capacity backpack; Fit for 15.6inch(L) or 14in(M) laptop; Anti-theft Design, anti-slash fabric; Solid straps, clips, and hardware; Shockproof sponge storage pocket; Breathable and soft straps; USB charging port;
Waterproof: Yes
Size and Capacity:  L for 5.28 -6.60 gallon (20-35 Liter), M for 3.96 -5.28 gallon (15-20 Liter)
Top bag closure Type: zipper 
Multi Functions: Backpack, top-handle bag and portable travel storage bag
Main Fabric: Oxford and Canvas

Backpack size:

M Size:   14.96'' *10.24'' *4.72'' (38cm*26cm*12cm)

L  Size:    15.75'' *11.02'' *4.72'' (40cm*28cm*12cm)

Capacity:

Internal: one laptop sleeve pocket, one main compartment, one internal zipper pocket and two internal slip pockets

External: one front pocket with magnetic button closure, one backside zipper pocket and two side pockets and one Anti-theft front pocket