Casual backpack Thule Chasm TCHB215 — Polyester, 30×21×53 cm, Darkest Blue

Thule Chasm TCHB215 is a casual polyester backpack in Darkest Blue sized 30×21×53 cm, designed for urban use with a 26 L capacity. The pack combines a durable, weather-resistant 900D fabric with a PFC-free water-repellent finish and recycled materials for exterior and interior fabrics, webbings and mesh. A padded laptop sleeve provides protection for electronics and can be accessed from the top or side, while breathable shoulder straps, a padded back panel and an adjustable sternum strap offer comfortable carrying for daily commuting, school and light travel.

Advantages

The backpack’s construction from heavy-duty polyester and water-repellent finish helps protect contents from light rain and everyday wear. Integrated padding and a dedicated laptop sleeve secure small electronics, and multiple access points simplify retrieval. Ergonomic shoulder straps, a ventilated back panel and an adjustable sternum strap distribute weight for extended periods of use. The use of recycled fabrics across exterior and interior materials reduces environmental impact without compromising durability.

Suitable for

• Daily commuting and public transport
• School or campus use for books and a 16" laptop
• Light travel and weekend trips
• Urban cycling or walking with moderate weather protection
• Organizing small electronics, accessories and a water bottle

Key specifications

• Material: polyester with 900D durable fabric and water-repellent finish
• Color: Darkest Blue
• Capacity: approximately 26 liters
• External dimensions: 30 × 21 × 53 cm
• Laptop compartment: padded sleeve fitting up to 40.6 cm (16")
• Carry system: breathable shoulder straps, padded back panel, adjustable sternum strap, carrying handle
• Access: top and side laptop sleeve access; top pocket and side pocket
• Closure: zipper

How to use

Place your laptop in the padded sleeve from the top or side access point for secure transport. Use the main compartment for clothing, books or larger items and the top and side pockets for small essentials such as keys, phone and chargers. Adjust the shoulder straps and sternum strap to distribute weight evenly and position the padded back panel against your back for comfort. Use the side pocket to carry a water bottle and secure external items with attachment points when needed.

Usage recommendations

Regularly clean the exterior with a damp cloth and avoid machine washing to preserve the water-repellent finish. For heavier loads, tighten the sternum strap and adjust shoulder straps to keep the pack close to your back. Store electronics in the padded sleeve and avoid overpacking to maintain comfort and prolong the backpack’s service life.