MTDE SIAM Double Caving Foot Loop

The SIAM double foot loop — catalogue reference C1010 — is a purely textile solution for SRT ascent, designed for pitches where a mechanical foot jammer is not used and both feet push simultaneously.

Technical specifications

• Manufacturer reference: C1010
• EAN13: 3760306060470
• Weight: 55 g
• Main cord: 5 mm diameter, 100% Dyneema (ultra-high molecular weight polyethylene, UHMPE)
• Attachment webbing: 15 mm flat, Dyneema/polyamide blend, reinforced stitching
• Configuration: 2 independent loops for simultaneous two-foot support
• Length adjustment: knot on Dyneema cord — no metal hardware, no mechanical adjuster
• Colour: mixed assorted (random delivery)
• Customs code: NC8 10001903
• Country of manufacture: Spain (Ramales de la Victoria, Cantabria)

Recommended uses

The SIAM is designed for SRT caving where the practitioner ascends without a foot jammer, using both feet together to push upward — a technique favoured by cavers tackling Yorkshire Dales, Peak District and Mendip pitches who prefer minimal, rattle-free kit. The double-loop geometry distributes effort symmetrically between both legs, reducing fatigue on long re-belayed pitches. It is equally suited to technical canyoneering, rope access in natural environments, and any scenario where bilateral foot support is preferred to a dedicated foot ascender.

Key strengths

• 100% Dyneema (UHMPE) main cord: tensile strength significantly higher than nylon at equal diameter — outstanding abrasion resistance when dragging across muddy limestone in Yorkshire Dales or Mendip tight sections
• Independent double loop: symmetrical bilateral foot platform reduces leg fatigue on multi-pitch re-belayed pitches exceeding 20 m — a clear advantage over single-foot solutions on deep shafts
• Fully textile construction, zero metalwork: no corrosion in sumped or wet caves, no rattle against the rope in silent passages, compresses flat into any suit pocket
• Knot-based length adjustment: fits any inseam without tools, nothing to lose or snag in tight squeezes or low crawls

Warranty