Does Ytonet have TSA FRIENDLY? Yes; built-in cable? Sure; external USB charging port? Yes; external headphone hole? Of course; waterproof material? Must. Apart from that, the material is made of high-quality waterproof and tear-resistant POLYESTER. The size is 12.2 x 5.5 x 16.5 inches, which is right for teen girls. After talking about boys’, of course, I also chose a special book bag that charges phone for teen girls. To be honest, many girls have no resistance to the color – baby pink. Because it is so cute.

Backpacks with USB Charger in 2021 - GearHunder 14 Best Charging Backpacks with USB Charger in 2021 - GearHunder

Kindly note: Some customers asked why the mobile phone could not be charged. We have summarized several reasons for your reference: However, the downside you need to be aware of is that it is not suitable for children 12 years of age and younger.

internal constant current charging circuit of the power bank is damaged, which is usually caused by overheating and burning the main charging chip. (Generally, this problem will not occur. You can buy a brand for mobile power to avoid it. Brand mobile power has overcharge, overheat, and overvoltage protection functions) And this mint green is really perfect. Also, both bags are made of high-density canvas for durability. Suppose it absorbs light for 20 minutes during the day, it can keep up to 6 hours of illumination at night. That surprises me.