The Marlow 2.5 mm soft shackle is a lightweight, high-strength replacement for metal shackles, ideal for use with 18 mm and 29 mm PolarWave blocks and other small-block applications. Made from bio-based Dyneema SK78 D12, this soft shackle delivers exceptional strength, minimal stretch, and outstanding resistance to abrasion and UV exposure.

With a closed circumference of 140 mm, the shackle forms a loop diameter of approximately 45 mm, making it perfectly suited for dinghies, lightweight hardware setups, and modern performance rigging. The low weight and zero water absorption make it ideal for sailors seeking efficiency and simplicity.

Key Features

• Suitable for PolarWave 18 mm and 29 mm blocks

• Manufactured from 2.5 mm Dyneema SK78 D12

• Approximate loop diameter: 45 mm (140 mm circumference)

• Extremely high strength for its size

• Low creep and minimal elongation

• Very lightweight and easy to handle

• ArmourCoat finish for improved grip and abrasion resistance

• Resistant to UV, chemicals, and saltwater

• No water shrinkage and minimal recoil

• Easily inspected, repaired, and spliced

Why Choose Marlow SK78 D12 Soft Shackles

Marlow’s D12 78 range is designed to replace steel wire with a lightweight, safe, and high-strength alternative. With eight times the strength-to-weight advantage over steel, excellent durability, and improved handling, this soft shackle is ideal for performance dinghy sailors who want reliable and efficient rigging without unnecessary weight.