Features 1、Efficient Cooling Technology: The outdoor cooling backpack utilizes semiconductor and compression cooling technology to keep the interior and back of the backpack cool in hot temperatures, effectively lowering the temperature. 2、Sweat Proof Comfort: While regular backpacks may cause sweating on the back during summer use, this airflow backpack uses compression cooling technology to ensure your back stays cool and comfortable. 3、Nylon Construction: Made of premium nylon material, the laptop backpack is wear proof, tear resistant, breathable, reliable, and has a long lifespan, suitable for both men and women. 4、Multi Functional Design: This backpack not only provides cooling functionality but can also be used as a commuter backpack, offering excellent comfort while carrying your laptop and other daily essentials. 5、Enjoyable Outdoor Experience: Whether hiking, cycling, or engaging in other outdoor activities, the cooling backpack provides long lasting coolness, enhancing the enjoyment of outdoor adventures. Specifications Item Type: Cooling Backpack Material: Nylon Weight: Approx. 1335.00g/47.09oz Product Size: Approx. 28x16x41cm/11.02x6.3x16.14in Power: 10W Cooling Methods: Semiconductor and Compression Control: Independent Button Switch Usage Time: Compatible with 5000mAh Power Bank for 4 to 5h Battery Life Package List 1 x Backpack 1 x Main Unit 1 x Manual