Jammy 50CM Jammy 50CM
Jammy 50CM Jammy 50CM

Jammy 50CM

SKU: BEA-10036

A certified and ready-to-use auto-blocking device. View full details
Size: 50CM

$34.99

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The lightweight Jammy is a ready-to-use auto-blocking device to simplify your manoeuvres in alpine climbing and multi-pitch route adventures. Ideal for auto-blocking knots like the Prusik and Machard and designed to fit all rope diameters (depending on the length of the Jammy), on one or two strands. The flexible Technora® aramid cord has a polyamide sheath for grip even on thinner ropes and has a strength of 22kN, even in cases of significant heating due to friction. A durable loop that will be indispensable in the kit of climbers looking for simplicity. Certified EN566.
  • For multi-pitch routes, alpine climbing, mountain guides and professionals
  • Lightweight, heat-resistant, and versatile
  • Suitable for all rope diameters, on one or two strands; its flexible aramid cord with a polyamide sheath allows it to grip effectively even on small-diameter ropes
  • 22kN resistance, even in cases of significant heating due to friction
  • The robust construction resists repeated bending
  • The heat-shrink sheath protects the stitching and contributes to its incomparable lightness compared to mechanical systems
  • Certified EN566
  • When to use the Jammy?
    • Creating auto-blocking knots (Prusik, Machard)
    • Securing rappels
    • Quick hauling systems
    • Extending a poorly placed anchor point to avoid a lever arm
    • Using a natural anchor: shrub, thread
    • Possible use as an anchor sling
  • Correspondence between Jammy length, rope diameter, and number of wraps:
    • Jammy 35cm: Prusik on two strands
      Rope diameter 7.3 to 8.1mm: 3 wraps
      Rope diameter 8.1 to 10mm: 2 wraps
    • Jammy 50cm: Machard on two strands
      Rope diameter from 7.3 to 8.1mm: 5 wraps
      Rope diameter 8.1 to 10mm: Beal recommends investing in a longer Jammy

Warning: Rock and Alpine climbing are potentially hazardous and dangerous. Any person using our equipment in any manner is personally responsible for learning the proper techniques involved and that the equipment used is designed for the application. The purchaser accepts full and complete responsibility and liability for any and all damages and injury that may result from use of equipment bought from Bivouac Outdoor. Instruction should be sought from professionals in the safe use of this piece of equipment. This equipment is designed for recreational use and should not be used for industrial applications.

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How long will my order take to arrive?

Standard NZ orders are sent via NZ Post Overnight Delivery. Orders placed before 2pm are usually delivered the next working day. Rural deliveries and some remote areas may take a little longer. Oversized items like large packs or tents can take 5–9 working days.

How much does shipping cost?

Shipping is free on New Zealand orders over $150. Orders under $150 have a flat $5 shipping fee. Oversized items incur an additional shipping charge due to their size and weight.

Can I return or exchange an item if it doesn’t fit?

Yes. New and unused items can be returned within 30 days for a refund or exchange, provided they’re in original condition with tags and packaging attached. If you’re unsure about sizing before ordering, our team is always happy to help. Customers are responsible for return shipping costs, but we’ll cover the freight cost of sending out exchanged items.

Can I click & collect my order?

Yes - we offer free Click & Collect from all Bivouac stores. If your item is already available in your selected store, it may be ready the same day. Some items may need to be transferred between stores and can take 3–5 working days. We’ll contact you as soon as your order is ready to collect.

Can I track my order?

Yes. Once your order has been dispatched, you’ll receive a Shipping Confirmation email with your NZ Post tracking link and details. All online orders are fully tracked so you can follow your delivery from dispatch through to arrival.

Jammy 50CM

Jammy 50CM

$34.99

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