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White transparent PVC roll-top dry bag with adjustable shoulder straps and side handle

Lowepro SP431W 5L waterproof bag white

SKU CH-PBVQ-M621Y MPN SP431W

A 5 L transparent PVC dry bag with roll-top closure, adjustable straps and a free touch-screen phone case for water sports

  • SizeMedium
  • ActivityHiking
  • Length, width and height4.4 L x 9.4 W x 31.9 H centimeters
  • Pattern styleTransparent
  • Compatible screen size15 in (38.1 cm)
  • Age groupAdult
  • Waterproof protection from seamless construction handles accidental submersion
  • Durable 0.6 mm bottom and 0.3 mm side PVC resists wear and wipes clean
  • Adjustable straps and side handle allow backpack or hand-carry use
  • Transparent body in 11 colours lets you spot gear and read screens
  • Includes touch-screen phone case and roll-top adjusts the 5 L capacity

Waterproof dry bag for water sports

The Lowepro SP431W is a 5 L roll-top dry bag built from seamless PVC to protect gear during kayaking, paddleboarding, boating and beach trips. Its transparent body lets you spot contents quickly and even read a phone screen through the material. Adjustable shoulder straps and a side handle allow backpack or hand-carry use for adults of any gender.

Roll-top closure and strap adjustment

Seal the bag by rolling the top edge down at least three times and clipping the buckle; this creates the watertight barrier that handles accidental submersion. The straps slide through ladder-lock buckles for a snug fit, but over-tightening can strain the welded seams. Rinse salt water off after each use to prevent the PVC from stiffening at the .6 mm base and .3 mm sidewalls.

Check your gear dimensions and sensitivity

The main compartment measures 4.4 x 9.4 x 31.9 cm, so verify that laptops, tablets or camera housings fit within that envelope before ordering. The included touch-screen phone case fits screens up to 15 inches, but thicker rugged cases may not slide in. Note the California Proposition 65 warning for DEHP exposure if that regulation affects your purchase decision.

How it compares

Measured against everything we stock in Utility & Everyday Bags, at today’s prices. Recalculated every night.

Price $27.99
Pricier than about 58% of the 2,172 comparable items (median $23.99).

Specifications

Product
Brand nameLowepro - Wynit
Model nameSP431 W
Part numberSP431 W
Pattern styleTransparent
Size & build
SizeMedium
Length, width and height4.4 L x 9.4 W x 31.9 H centimeters
Main materialPolyvinyl Chloride (PVC)
Product weight0.62 lb (0.28 kg)
Compatibility
Compatible screen size15 in (38.1 cm)
More details
Age groupAdult
Suitable forUnisex
ActivityHiking

Questions about this item

How can I check the roll-top seal is watertight after packing the 5 L bag?

Roll the top edge down at least three times, fasten the buckle, then press the bag; no air should escape and the 0.6 mm bottom and 0.3 mm side PVC should show no wrinkles at the seal.

What comes with the SP431W and what must I add for phone protection?

The package includes the 5 L transparent PVC dry bag with adjustable shoulder straps, a side handle and a free touch-screen compatible waterproof phone case; nothing else is required for phone protection.

Which capacity from the 5 L, 10 L, 20 L, 30 L or 40 L range suits a 15-inch device plus a change of clothes?

The 5 L model measures 4.4 × 9.4 × 31.9 cm and fits a 15-inch screen with room for a light clothing layer; choose 10 L or larger for bulkier gear.

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