Peak Design Outdoor Sling 4L – Kelp

Ultralight outdoor shoulder sling

The Outdoor Sling 4L is the ideal middle ground between our 2 L and 7 L models. It is an ultralight sling that balances simplicity, compactness and ample capacity. It offers a pocket layout similar to the 7 L model, but in a smaller format – ideal for carrying the essentials on trips or for everyday use.

A clean design, thoughtful details and a focus on function make life easier in every way. The quick-adjust padded shoulder strap with a reinforced nylon buckle allows cross-body or waist carry. The outer material – lightweight Terra Shell™ 210D ripstop (100% recycled nylon) – is abrasion-resistant and, of course, water-resistant, with both a PU coating and an external PFAS-free water-repellent finish. Both pockets are closed by a rugged yet very lightweight 5 mm weatherproof UltraZip™. The Outdoor Sling has a padded rear phone pocket with magnetic closure, a front zip pocket for quick access and a main compartment hiding a mesh organiser with 3 smaller pockets for batteries, SD cards, keys, sunglasses and other small items.

Fair Trade certified.

Looking for something bigger or smaller? Take a look at the Outdoor Sling 7L or Outdoor Sling 2L.

KEY FEATURES

• Padded adjustable shoulder strap that can be configured for cross-body or waist carry
• The shoulder strap can be easily detached or flipped using the Cord Hook™ Cam Lock system
• The shoulder strap has a low-profile nylon buckle that can be operated with one hand
• Includes a Cord Hook™ stabiliser strap for secure carry during active movement (such as cycling)
• Front zip pocket for easy access, also fitted with an elastic key tether
• The main compartment and front pocket are accessed via a durable, weatherproof 5 mm UltraZip™
• Padded back-panel pocket with magnetic closure for quick and secure phone storage
• The inner back panel has 3 stretch mesh pockets for small items – cards, batteries, keys, sunglasses and more. One internal pocket closes with a zip.
• The outer material is ultralight Terra Shell™ 210D ripstop fabric made from 100% recycled nylon
• The bag is functionally waterproof thanks to a PFAS-free water-repellent finish, internal PU coating and weatherproof UltraZips™
• The sling converts into a chest-mounted gear pouch for Peak Design Outdoor Backpacks (by detaching the strap and attaching it to the backpack with Gear Loops)
• Fair Trade certified

DIFFERENCES FROM THE 7L MODEL

• Does not fit an X-Small Camera Cube
• Does not include 2 Cord Hook™ Gear Loops
• Includes a removable stabiliser strap
• The main compartment is neither expandable nor compressible
• Internal layout with 3 pockets (the 7L has 8 internal pockets)

SPECIFICATIONS

• External dimensions: 31.0 cm x 17.5 cm x 5.0 cm
• Internal dimensions: 30.5 cm x 17.0 cm x 4.5 cm
• Volume: 4 L
• Weight: 185 g

Phone pocket capacity

• Fits up to an iPhone 16 Pro Max or Samsung S25+
• The phone is inserted at an angle. The pocket opening is narrower and has a magnetic closure so the phone can't fall out.
• Pocket opening width: 19 cm

Materials

• Ultralight Terra Shell™ 210D ripstop outer fabric is weatherproof, 100% recycled and Bluesign-approved
• Internal PU coating with a 1,500 mm hydrostatic head
• PFAS-free water-repellent finish
• Ultra-durable #5 UltraZips™ with abrasion-resistant UHMWPE fibres
• Internal stretch pockets made of a nylon/UHMWPE blend
• Breathable nylon mesh back panel
• Bluesign-certified nylon webbing
• Cord Hook™ Cam Lock buckles made of glass-fibre-reinforced nylon

In the box

• 1x Outdoor Sling 4L
• 1x Key Tether

Warranty: Lifetime