Expandable Carry On Backpack for Travel

Out of stock
$59.99 USD
Size Guide

MIER 40L Carry on Travel Backpack

The design and features of this MIER carry on backpack make it perfect for air travel. Whether it’s the sleek laptop sleeve, the easy to lock zippers, the luggage handle pass through or the hideaway shoulder straps – this bag thrives in airports and airplanes. It meets the standards for the maximum size of luggage carried by most airlines. The computer compartment can hold a 17.3 inch laptop. RFID pockets and anti-theft zippers make your personal belongings safer. The shoulder strap and detachable waist strap allow your backpack to be easily transformed into a carry-on travel bag. When it comes to inclement weather, the special rain cover protects your backpack from being wet. Perfect for college school, travel and business trips.

Note: This product only ship to US Addresses!


  • RFID Protection & Anti-theft ---- The large front zipper compartment including two big zipper pockets which has multiple small pockets inside that can hold a variety of things, such as wallets, pens, keys, notes, etc. One of the zipper pockets has a special anti-magnetic function which is perfect to store credit card/bank card. The external zipper is a two-way zipper design, and each zipper has a keyhole, which can be locked to achieve the purpose of theft prevention, protecting your privacy eff
  • Expandable Backpack with Laptop Compartment ---- 40L main compartment has buckle straps to fix the clothes and does not spread out. The outer zipper expands/compresses the space of the main bag to suit different needs. In addition, there is padded laptop & tablet sleeve in the third compartment, designed for keep your devices at security (Fits 17.3’’ laptop)
  • Rain Cover & Thoughtful Design ---- 1 rear compartment for hiding detachable backpack straps; 1 side external zipper mesh pocket for water bottle; 4 exterior compression straps are carefully placed to provide maximum compression and reduced stress on the zippers; 1 waterproof rain cover protects your backpack from rain; 1 luggage strap at the back can be easily attached to the trunk; 1 secret small pouch on strap is perfect for small items
  • Comfortable & Flexible Carrying ---- There are 3 ways to carry this bag. The padded shoulder strap is very comfortable to carry as a double shoulder backpack. Adjustable sternum strap and waist strap to balance load when you're carrying a heavy load in the Backpack. Top and side soft foam padded grab handles for multiple carrying ways and allow to convert into a portable duffel bag
  • Limited Manufacturer's Warranty ---- TWO-YEAR for MIER Travel Backpack. We stand behind our products. If a product fails because of a defect in material or the quality of workmanship, we will repair or replace it free of charge. MIER takes pride in the quality of our products and warrants that the materials and workmanship will be free of any defects. Our factories follow a strict set of specifications and quality standards, however, if a problem develops, please contact us

Free Shipping On All Orders, No Minimum Purchase.

Delivery Information

Miersports.com understands that getting your items in a timely manner is important to you, so we process your order swiftly. Please note that because we make every effort to ship your product as quickly as possible, once the shipping process begins, we are unable to make any changes to your order.


  • 10 to 15 Business Days to Asia and its neighbor countries
  • 10 to 20 Business Days to the US and Europe
  • In-stock items will ship within 24-48 hours


  • Needs to make up the difference compared to standard shipping, please contact us before ordering
  • In-stock items will ship within 24-48 hours

All orders are estimated to ship typically within one to two days after the order is placed. Shipping days exclude weekends and holidays. At this time, we are currently free to ship to limited countries listed on our website, other countries please email info@miersports.com in advance. Most of Miersports' products will ship from our factory warehouse. All free shipping products will ship via standard shipping. Orders shipping to APO/FPO addresses will be unavailable. We do not ship to PO Boxes.

Returns Policy

We strive to provide the best customer experience. If for any reason you are not satisfied with the product you purchased from miersports.com, you may return it within 30 days of delivery for a full refund minus any shipping charges. We just ask that the product is in brand new condition with the original tags still attached for full credit.


If you're unhappy with your purchase, please take the following steps:
Simply fill in the details on the returns form within 30 days of delivery to return your item(s). Please include your Order ID and reason for your return in the form for documentation purposes. Don't know your order number? Sign in to your account to process returns. During the returns period, we will respond with authorization and instructions for returning your item(s). A full refund of the purchase price (minus any shipping charges) will be issued in the form of the original payment for all items confirmed returned in a re-saleable condition. Refunds may take between 5-7 business days to process once an item has been delivered to our warehouse. Typically, refunds show up on your credit/debit card within 2 business days after the refund is issued. If you run into any problems, feel free to contact us here

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Expandable Carry On Backpack for Travel
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