# MATEIN 40–45L Expandable Carry-On Travel Backpack with Convertible Carry – Airline Approved – Black

🧳 **Big capacity without the bulk.**  
Built for travelers who need room without sacrificing mobility, this expandable backpack opens up to 45L to handle packing cubes, outfits, camera gear, and weekend essentials. In standard mode, it stays within carry-on limits for many airlines—ideal for short vacations, city breaks, and business travel.

📦 **Expandable when plans change.**  
A smooth expansion zipper unlocks extra space only when you need it, keeping the profile compact for daily carry. Inside, compression straps stabilize clothing and reduce shifting, so your load stays neat from departure to arrival.

🔄 **Convertible carry for real travel days.**  
Hideaway padded shoulder straps tuck neatly into a zippered back panel, transforming the backpack into a briefcase-style carry or duffle. Two padded grab handles (top and side) make overhead-bin handling easy, while the rear luggage strap secures the bag to rolling suitcases during airport transfers or cruises.

🎒 **Lightweight comfort, built to last.**  
At just 2.2 lb, breathable air-mesh padding and adjustable straps keep long days comfortable. Four external compression straps reduce zipper stress and add stability. Crafted from water-resistant, lightweight polyester with sturdy, lockable zipper heads, this backpack is ready for varied climates and frequent trips. **Pack more when you need it—travel lighter when you don’t.**

## Details

- **Price:** 79.95 USD
- **Vendor:** PulinGO
- **Type:** Luggage & Bags > Backpacks
- **Tags:** 40l 45l backpack, airline approved backpack, carry on travel backpack, convertible backpack, expandable travel backpack, lightweight travel bag, water resistant backpack, weekender backpack

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 79.95 USD | In stock |

## Images

- MATEIN 40–45L Expandable Carry-On Travel Backpack with Convertible Carry – Airline Approved – Black
- MATEIN 40–45L Expandable Carry-On Travel Backpack with Convertible Carry – Airline Approved – Black
- MATEIN 40–45L Expandable Carry-On Travel Backpack with Convertible Carry – Airline Approved – Black
- MATEIN 40–45L Expandable Carry-On Travel Backpack with Convertible Carry – Airline Approved – Black
- MATEIN 40–45L Expandable Carry-On Travel Backpack with Convertible Carry – Airline Approved – Black
- MATEIN 40–45L Expandable Carry-On Travel Backpack with Convertible Carry – Airline Approved – Black
- MATEIN 40–45L Expandable Carry-On Travel Backpack with Convertible Carry – Airline Approved – Black
- MATEIN 40–45L Expandable Carry-On Travel Backpack with Convertible Carry – Airline Approved – Black
- MATEIN 40–45L Expandable Carry-On Travel Backpack with Convertible Carry – Airline Approved – Black

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> Source: [PulinGO](https://www.pulingo.com/products/matein-expandable-40-45l-carry-on-travel-backpack-black)
> Updated: 2026-05-21