Fabric type: 100% Unknown Durable material: Made of high quality water resistant oxford cloth fabric, classic generous and long lasting. The plush lining helps prevent items from slipping out and provides anti-drop and shock-proof protection. External dimensions: - 13 inch: L x W x D 34 x 26 x 3 cm (13.4 x 10.2 x 1.2 in) - 14 inch: L x W x D 39 x 28 x 3 cm (15.4 x 11.0 x 1.2 in) - 15 inch: L x W x D 40 x 30 x 3 cm (15.7 x 11.8 x 1.2 in) Comfortable & compatible design: Removable and adjustable shoulder strap and sturdy handles ensure comfortable carrying for long periods. The laptop briefcase attaches easily to trolleys or luggage handles, making travel and business trips easier wherever you go. Ideal gift: The laptop bag is a versatile companion for business, college, travel, outdoor activities, and everyday use. A practical gift for father, mother, friends, him or her. Use scenarios: - Business commuting and meetings: carry a 13–15 inch laptop securely with comfortable, adjustable carrying options and trolley compatibility for easy airport or office travel. - College and campus life: fits 13–15 inch laptops, with room for essential documents and accessories during classes and library visits. - Travel and outdoor activities: lightweight, weather-resistant protection with easy luggage attachment to streamline trips and on-the-go work.