Bange Ontra 77115S Waterproof Polyester Laptop Backpack
The Bange Ontra 77115S is a lightweight expandable waterproof backpack with anti-theft pockets and a flannel-lined sleeve for a 15.6" laptop. Slim by day and roomy when expanded, it adapts to your needs. Ideal for commuting, school, and travel.
1️⃣ WATER-RESISTANT OXFORD CLOTH – DURABLE & SPLASH-PROOF – The BANGE BG-77115 Ontra is crafted from high-quality Oxford cloth with a polyester lining, delivering a water-resistant, wear-resistant build that's tough enough for everyday challenges. A sleek, slim backpack that keeps a low profile while standing up to your busiest days.
2️⃣ EXPANDABLE SLIM DESIGN – COMPACT WHEN YOU WANT IT, ROOMY WHEN YOU NEED IT – A hidden zipper expands the bag by 8 cm for extra storage, letting the Ontra stay slim for daily carry and grow for travel days. One adaptable backpack that flexes instantly to match whatever your schedule demands.
3️⃣ FLANNEL-LINED 15"–16" LAPTOP COMPARTMENT – TECH PROTECTION – A soft flannel-lined laptop compartment holds laptops up to 16 inches, keeping your tech safe from bumps and scratches. Your most valuable device travels protected and secure through commutes, school days, and flights.
4️⃣ ANTI-THEFT ZIPPER + WET/DRY STORAGE + USB – SMART, SECURE ORGANIZATION – A concealed anti-theft zipper and hidden pockets protect your valuables, while wet/dry separation, card pockets, a keychain holder, and a glasses hoop keep everything organized. A built-in USB charging port keeps your devices powered on the move.
5️⃣ ERGONOMIC SMART CARRY DESIGN – COMFORT ALL DAY LONG – A breathable sponge back panel, ergonomic shoulder straps, a chest buckle, and a top handle deliver comfort and convenience through long wear. The trolley strap slides easily over suitcase handles, making airport transitions effortless.
6️⃣ 43×31×7 CM (EXPANDS +8 CM) | 0.9 KG – WORK, SCHOOL & TRAVEL READY – At a slim 43 × 31 × 7 cm and just 0.9 kg, the BANGE BG-77115 Ontra is your smart everyday companion — slim when you travel light, expandable when your day demands more. Secure, organized, and effortlessly cool for work, school, and flights.

