Waterproof Sling Waist Pack with Airtight Zipper

At a Glance

• Airtight waterproof zipper — a sealed main compartment, not just a flap.
• Welded 500D PVC, IPX7 — no needle holes; wipes clean after any trip.
• Two ways to carry — worn as a sling across the chest or as a waist pack.
• Front zip pocket + lash webbing — quick access, plus D-rings for clipping gear.
• Light and low-profile — 0.56 kg, in four colours.

Product Introduction

Sealock manufactures the Waterproof Sling Waist Pack with Airtight Zipper, model SL-F115, for people who want their essentials sealed and close to the body. As a welded waterproof-bag factory, we build the body from durable 500D PVC with high-frequency welded seams and close the main compartment with a genuine airtight waterproof zipper — so this waterproof sling bag keeps a phone, wallet, keys and documents dry through rain, spray and a day on the water. It wears as a chest sling or a waist pack, adds a second zip pocket and front lash webbing, and weighs just 0.56 kg.

Airtight Waterproof Zipper

The main compartment closes with an airtight waterproof zipper — a sealed zip track of the type used on premium dry gear, not an ordinary coil zip under a flap. Combined with the high-frequency welded body, which has no stitch holes anywhere, it gives the pack an IPX7 rating, so your phone and valuables stay dry through heavy rain, spray and brief immersion. We verify the seal on every unit with a full water-immersion test, submerging the closed pack for more than two hours and confirming the inside stays dry.

Sling or Waist — Two Ways to Wear It

A wide, adjustable and removable webbing strap lets you wear the pack as a crossbody sling across the chest, or cinch it around the waist as a hip pack. The strap adjusts across a broad range with a quick-release buckle, so it switches between carries in seconds and fits over a jacket or a wetsuit just as easily as over a t-shirt.

Front Pocket, Lash Webbing and D-Rings

A second water-resistant zip pocket on the front keeps small items you grab often separate from the sealed main compartment, while a row of elastic lash webbing and two D-rings across the front let you clip on tools, a light, a bottle opener or a carabiner. It is a simple, practical layout for fishing, boating, hiking or riding.

Breathable Padded Back

The back panel is a breathable padded pad that sits against your body, cutting the clammy feel of a coated bag worn close and adding comfort on a long walk or ride. Side attachment loops give you extra clip-on points.

Product Specifications

Printing & Logo Options

Brand it your way: silk-screen, heat-transfer, digital and reflective printing, embossed logos and high-frequency welded logo patches.

Where It Is Used

A sealed everyday pack for water and land:

Fishing · Boating · Kayaking · Paddle Boarding · Beach · Hiking · Cycling · Motorcycle Riding · Travel · Daily Carry

How We Make and Test It

Each pack starts with cut 500D PVC. We high-frequency weld the body into a seamless shell with no needle holes, install the airtight waterproof zipper, then fit the front zip pocket, lash webbing, D-rings, breathable back pad and the adjustable removable strap. Before a batch ships, we run a full water-immersion test — submerging each sealed pack for more than two hours to confirm the IPX7 seal — and pull-test the strap anchors, buckle and D-rings under load. The airtight zipper and the welded seams are the two points we inspect hardest.

OEM / ODM, Wholesale and Dual-Base Production

As the factory, we supply the SL-F115 for OEM, ODM and wholesale buyers from an MOQ of 300 pcs, with samples in 7–15 days and production in 30–45 days. This model can be produced at either our China or our Vietnam base, giving you flexibility on lead time, duties and country of origin. Beyond black, yellow, grey and orange we customize colours, add your logo, and adjust the size, pockets and strap configuration. For a custom or wholesale waterproof sling pack program under your own brand, send your spec and target quantity and we will quote against it.

Need something bigger? See our waterproof backpacks and dry bags.

FAQ

How waterproof is it?

The main compartment uses an airtight waterproof zipper on a fully welded 500D PVC body, rated IPX7, and each unit is verified with a full water-immersion test of more than two hours. The front pocket is water-resistant — built for splashes and rain rather than immersion.

Can it be worn as a waist pack?

Yes. The adjustable, removable strap lets you wear it as a crossbody sling or cinch it around the waist as a hip pack.

How much does it hold?

Around 3L at 24 × 8 × 15.5 cm — a phone, wallet, keys, documents and small essentials, at just 0.56 kg.

What are the MOQ and lead times?

MOQ is 300 pcs, with samples in 7–15 days and production in 30–45 days, produced in China or Vietnam. Four stock colours plus custom colours and logos are available. Send your spec for a quote.

Request a Quote

Sealock (YiFuLong Outdoor Gear Co., Ltd.) has built welded waterproof gear since 2003, with production in Guangdong, China and Ho Chi Minh City, Vietnam. To order the SL-F115 or start an OEM/ODM program, send us your colours, logo, production base and target quantity for pricing and lead time. MOQ 300 pcs · samples 7–15 days · production 30–45 days.

YiFuLong Outdoor Gear Co., Ltd. (Sealock)
Email: info@sealock.com.hk · Tel: +86-13632981825