Ditch the Backache, Embrace Style

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Extensive research* shows that carrying heavy bags on your back or shoulder can strain your muscles, leading to aches, pain, and posture problems.Some bags weigh more than 7 pounds (3.2 kg) empty.  Add your laptop, phone, and wallet, and you're already in the danger zone! 

*See for Example:

1. Science Daily,  Heavy backpacks may damage nerves, muscles and skeleton, study suggests, 

https://www.sciencedaily.com/releases/2013/02/130221141604.htm?form=MG0AV3

2.The Cut, Is my gigantic purse causing my back pain? https://www.thecut.com/2016/10/back-pain-causes-is-my-heavy-purse-to-blame.html

3.New York Post, Your heavy bags are killing you, https://nypost.com/2019/03/18/your-heavy-bags-are-killing-you-heres-how-to-fix-that/

Here's Why Threeler Wins 

• Lightweight Design: Weighing only 4 pounds (1.9 kg), Threeler reduces muscle strain, keeping your back happy.
• Effortless Conversion: Need to carry more? Simply switch to the elegant roller mode and continue your day pain-free! It's the perfect workout backpack and travel bag!