air circulation system

Overview
Extreme comfort: The ventilation and air circulation system keeps your back cool and dry. The soft padding at the back of the backpack makes the back comfortable, and the adjustable shoulder/chest strap perfectly fits your body. 
Safety considerations: Reflective safety labels and reflective signs provide high visibility in low-light environments, ensure your safety and hydration in extreme environments and weather conditions, and use food-grade materials for the inner tank air circulation system

Specification
Applicable gender: neutral/male and female air circulation system 
Material: polyester fiber air circulation system
Hardness: medium to soft air circulation system
Capacity: 20L or less air circulation system
Applicable scenarios: running sports, fitness and bodybuilding, cycling sports, hiking and camping, sports outdoor bags
Color: 591 light gray with dark blue, 591 light gray with orange, 591 light gray with light blue, 591 light green, 591 royal blue, 591 dark gray with orange, 591 black and white, 591 black and blue, 591 black fluorescent green, 591 black and yellow

Package Content
Sports backpack X1