Waterproof motorcycle saddle bag, motorcycle helmet bag, motorcycle backpack, double luggage bag, Compact Lightweight Design, 38 liters

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Product Description This expandable hard motorcycle backpack delivers versatile storage for commuting, touring, and daily riding. Expanding from 25L to 38L, it offers space for a full-face helmet, 14-inch laptop, clothing, and travel essentials while keeping a streamlined, low-drag profile. The hard shell design, waterproof material, rain cover, and reflective details help protect your gear and improve visibility on the road. It installs quickly without tools and converts from a rear seat bag to a backpack for flexible use on and off the bike. Key Features Expandable Storage: Adjusts from 25L to 38L to fit helmets, laptops, clothing, and daily travel gear. Aerodynamic Hard Shell: Streamlined exterior helps reduce wind resistance for a more stable riding experience. Waterproof Protection: Waterproof fabric plus rain cover helps keep contents dry in changing weather conditions. Tool-Free Installation: Attaches securely to the motorcycle rear seat with included straps for fast setup and removal. 2-in-1 Carrying Design: Converts easily from motorcycle tail bag to backpack with detachable shoulder straps. Night Riding Safety: Reflective strips on the front and sides enhance visibility in low-light conditions. Specifications Product Type: Hard motorcycle backpack / rear seat bag Capacity: 25L expandable to 38L Fits: Full-face helmet, 14-inch laptop, clothing, travel gear Material: Hard shell with waterproof fabric Weather Protection: Water-resistant/waterproof construction with rain cover Safety Detail: Reflective strips Installation: Tool-free strap mounting Carrying Options: Motorcycle bag and backpack Usage Ideal for motorcycle commuting, weekend rides, short trips, and everyday travel. This motorcycle tail bag adds compact storage without occupying handlebar or frame space. For best fit, check the 38L expanded size against your bike seat area and mounting rail position, and regularly inspect straps, buckles, and mounting points due to vibration and weather exposure. Returns, Refunds and Replacements Delivery Timeframe Please note that we cannot guarantee the exact date of arrival, and the delivery timeframes (excluding weekends and public holidays) are as follows: For customers in Victoria, approximately 7-10 working days; For customers in NSW, SA, ACT, and QLD, approximately 9-12 working days; For customers in WA, NT, and TAS, approximately 9-12 working days.