Sonic Welded Dry Bag Backpack 27L | Waterproof Daypack for Travel, Beach

Product Key Features

Sonic Welded Dry Bag Backpack 27L

• Sonic Welded Seams – No Needle Holes
• Waterproof Roll-Top or Zipper Closure
• Padded Shoulder Straps & Back Panel
• Tear-Resistant TPU Construction
• Lightweight, Ergonomic Carry
• Custom Colors, Capacity & Logo (OEM/ODM)

Product Highlights

Sonic Welded Dry Bag Backpack 27L

• Welded Waterproof Construction: High-frequency RF welding bonds the TPU panels into one seamless shell. With no stitched needle holes, this backpack keeps contents dry in heavy rain and splash conditions.
• Roll-Top Airtight Seal: The roll-top closure folds and clips to create an airtight seal — the same system trusted by kayakers and sailors worldwide.
• Comfort-First Design: Padded, adjustable shoulder straps, a breathable back panel and a sternum strap distribute weight comfortably during long hikes or commutes.
• Gear-Ready Organization: Roomy main compartment plus smart pockets keep clothing, electronics, water bottles and daily essentials organized and easy to reach.
• Built for the Outdoors: From mountain trails to city commutes, this backpack is engineered for hiking, travel, kayaking, cycling and everyday adventure.
• OEM/ODM Customization: Custom colors, capacity, materials and logos available with low MOQ, fast sampling and reliable export from our factory.

Dry Waterproof Backpack Bag • Made with eco-friendly TPU Tarpaulin assures the great performance of this airtight waterproof backpack. Not only for rain but also for snow. • One main large compartment. There is enough space for your belongings. This airtight waterproof backpack can keep your important gear dry and safe during your adventure. • High-quality mesh pockets on the side of the airtight waterproof backpack to ensure easy access to any and all types of water bottles. • Outside the front zipper pocket, you can put mobile phone, wallet, pens and other small items into it. • A drain hole on the front panel of this airtight waterproof backpack that can release any built-up water. • Breathable padded shoulder straps and adjustable chest strap make for easy carrying this airtight waterproof backpack all day long. • This airtight waterproof backpack will hold up through winter & summer! Enjoy the versatility of hiking through the woods in the heat of July, or skiing down snow-packed mountains during the ice months.

Skysoar Bags — RF Welded Waterproof Bag Manufacturer

Skysoar Bags is a professional RF welded waterproof bag manufacturer and exporter based in China. We specialize in high-frequency RF welding, hot-air welding and ultrasonic welding — producing dry bags, waterproof backpacks, cooler bags, bicycle bags, duffel bags, laptop bags and more, all built with welded seams instead of needle holes for true waterproofing.

With 6 mass production lines and 180 skilled workers, our monthly output reaches 120,000 pieces. Every bag is quality-inspected before shipping, and our team provides full OEM/ODM service: custom materials, colors, sizes, logos and packaging with low MOQ, free samples and reliable lead times. Contact us for a quotation — we ship worldwide on FOB, CIF and DDP terms.