★ Large main compartment: Hold your daily essentials easily and some small pocket storing for pens,mobile phone,card with toiletry nets.

★ External port for ear-buds: Very convenient use for Iphone,Ipad,and other media usage.(Note:The port need to cut by yourself to avoid the delivery damage,please open it before you use)

★ Waterproof function: Water resistant backpack guards your electronics and papers from bad weather.

★ Ergonomic design: S straps offer the perfect contact with human body,wear comfortable.

Specifications

Dimensions:

Size L: 20" x 14.1" x 8.7" (51 x 36 x 22 cm)

Size M: 18.9" x 13.8" x 8.3" (48 x 35 x 21 cm)

Size S: 18.1" x 13.0" x 8.3" (46 x 33 x 21 cm)

Capacity:

Size L: Around 45L

Size M: Around 40L

Size S: Around 35L

Weight:

Size L: 1.98 pounds (0.9 kg)

Size M: 1.87 pounds (0.85 kg)

Size S: 1.76 pounds (0.8 kg)

Maximum laptop size: 16"

Fabric: Waterproof High Quality Polyester

Material: Made of a rubberized Ballistic Polyester Material.

Features

--BEING DURABLE: Bartack Stitch provides strong and long-lasting performance with maximal weight. Also there is a durable zipper across the backpack which provides high explosion protection performance.

--BEING CONVENIENT: A perfectly detachable cord. This will work well with key fobs to get in and out of secured doors.

--BEING SAFE: Front with reflector will make sure you visible,travel safely during the night.

--BEARING SYSTEM: It was combined by muti-layer material,anti sweat and air flow,20mm spongy layer,lithe and comfortable. Though store more belongings without worry about your back

--APPLICATION: Perfect for business trips or weekend getaways or for simply heading to the office or school and home again