Waterproof Dry Bag with Phone Window: Advantages and Practical Applications

Sealock supplies the waterproof dry bag with phone window to wholesale and OEM buyers worldwide, solving a specific problem on the water and in the rain: keeping a phone sealed while still allowing the screen to be used. The transparent window lets users read messages, follow maps, and take calls without opening the bag.

1. Company Overview

Sealock (YiFuLong Outdoor Gear Co., Ltd.) has designed and produced welded waterproof bags for over 20 years, operating two facilities in Dongguan, China and Ho Chi Minh City, Vietnam, and produces for international outdoor and marine brands including OSPREY, Helly Hansen, Musto, and CHUMS. Production is held to international compliance and social-audit standards.

• Established: 2003 (20+ years in waterproof bag manufacturing)
• Facilities: Dongguan, China | Ho Chi Minh City, Vietnam
• Certifications: ISO9001, BSCI, SMETA, HIGG, GRS, SCAN, CSR
• Services: OEM / ODM, custom logo, color, and capacity

2. How the Window Works While Sealed

The window is part of the seal, not a weak point. Sealock bonds the body seams by 27.12 MHz high-frequency welding and welds the transparent TPU window into the panel by the same process, forming one continuous skin with no needle holes. The TPU film transmits capacitive touch, so the screen works through the window. The roll-top closes the bag, and every design is validated to the 1.0 Bar test standard.

3. Core Advantages of a Phone Window Dry Bag

Compared with a plain roll-top bag, a phone window dry bag keeps the phone usable while sealed:

• Use without opening: navigate, reply, and take calls without breaking the seal
• Lower ingress risk: fewer open-close cycles at the water's edge
• Direct touch: the TPU window transmits capacitive touch, so the phone stays inside
• Dual protection: the phone is waterproofed yet visible, and high-visibility colors aid recovery if dropped
• Capacity range: 10L for essentials, 20L for clothing plus electronics

4. Product Range

The range below leads with the phone window dry bag and covers Sealock's current window models, with verified specifications and product pages.

5. Practical Applications

A dry bag with phone window earns its place wherever the screen is needed on the move:

• Kayaking and rafting: clip to the deck by the D-ring and read navigation and track through the window
• Sea and shore fishing: check tides, GPS, and conditions without wetting the phone
• Cycling: stow on the handlebar or pack and follow the route through the window
• Beach and pool: shoot photos, time laps, play music, all kept waterproof
• Hiking and trail running: read maps and pace without opening the bag in rain

6. Quality Control

Each production run passes six tests before shipment: tensile strength, bonding strength, zipper fatigue, salt spray, friction resistance, and 1.0 Bar waterproof pressure. The welded window area receives an additional bonding and immersion recheck.

7. OEM / ODM Customization and Cooperation

Sealock supports full customization for brand and distributor orders. Standard terms:

• MOQ: 300 pcs per model
• Customization: logo, color (standard high-visibility red, green, orange), capacity, window position and size, and fabric (PVC / TPU)
• Sampling: 7–10 working days
• Bulk lead time: confirmed at quotation, based on order quantity
• Trade terms: FOB Guangdong; other terms negotiable

Workflow: (1) inquiry and specification confirmation; (2) quotation and trade terms; (3) sampling and approval; (4) bulk production under the six-test QC; (5) final inspection and shipment. See the OEM / ODM services page.

8. FAQ

Q: Does the touchscreen work through the window?
A: Yes. The transparent TPU film transmits capacitive touch, so swiping, tapping, and unlocking all work without removing the phone.

Q: Is the window more likely to leak than the body?
A: No. The window is HF-welded into the panel as one continuous, needle-hole-free skin, and it passes the 1.0 Bar test plus an additional immersion recheck.

Q: What phone sizes fit?
A: The standard window fits mainstream large-screen phones, and the window position and size can be customized to a buyer's target models.

Q: What is the minimum order quantity and sampling time?
A: MOQ is 300 pcs per model, with samples produced in 7–10 working days. Bulk lead time is confirmed at quotation based on quantity and customization scope.

Request a Quotation

For specifications, samples, or pricing on the phone window dry bag (10L/20L) or any model in the range, submit an inquiry. Sealock responds to procurement enquiries within 24 hours.