Secondaire MK2
Sewn loops
QUICK SPECS:
- ISA Stretch
- 2.5% @ 5kN · 5.5% @ 10kN
- Design
- Flat, 100% PES
- Weight
- 44 g/m (2.96 lbs / 100 ft)
- MBS
- 24.49 kN (5,506 lbf)
- Sewn Loop MBS
- 23.21 kN (5,218 lbf)
- Width
- 20.0 mm (0.79 in)
- Thickness
- 2.5 mm (0.1 in)
Batch W26AC View batch report
Description
Say hello to the successor to our very popular Secondaire webbing. We have heard the feedback from our customers and enhanced the feature-set of this webbing to increase its functionality as a supreme backup webbing.
Secondaire MK2 is now stronger at an MBS of 27 kN. It maintains the same weight of 44 g/m. It is a lot more stiff to prevent excessive candy canes on the backup, while maintaining its dense pack-ability. It has a much smoother weave that is nicer in the hand and on the foot when you happen to step on it.
All these new features at the same low price as our original Secondaire webbing.
Simple Design for Backup Lines
No need to get fancy for a webbing used as a backup
The aim with Secondaire MK2 was to get as simple of a polyester webbing that we could in order to make backup lines more accessable. We achieved that by sticking with a plain weave structure, using natural polyester yarn and a simple marker yarn to help detect twists. No fancy weave technology or specialty yarn was used in Secondaire MK2 in order to keep costs as low as possible.
Due to the simple structure of Secondaire MK2, it packs very small and handles very well in the hand. We estimate about a 9.5L volume per 100 meters of Secondaire MK2, which is quite small for polyester webbings. Keep the pack small and light for those alpine missions without breaking the bank with Secondaire MK2.
Simple Colors Scheme
With only white and black as the colors, Secondaire MK2 keeps it simple!
As mentioned above, we kept Secondaire MK2 as simple as we could. However, in order to maintain the ability to detect twists in Secondaire MK2 with a quick glance, we added a marker line off-center. This is very helpful when taping your line, sewing the webbing on our end, and just general aesthtics of the webbing.
About This Webbing
Certification, design, materials, compatibility and sewing — the fixed properties of this webbing, the same on every batch we weave.
Material
- Material
- 100% Polyester
- Weave structure
- Flat
- Weave features
- Single-Zone Weave, Black Marker Yarns
- Weave zoning
- Single Zone
Walkability
- Style
- Optimized for backups and longlines
- Optimum tension
- 1.0 - 5 kN (225 - 1,125 lbf)
- Preferred lengths
- 50+ m (165+ feet)
Highline
- Highline approved
- Yes
- Backup length
-
How long should the backup be with a Secondaire MK2 mainline?
Mainline Backup 50 m 54 m 60 m 64.8 m 100 m 108 m 120 m 129.6 m For any other length, make the backup 8% longer than the main.
Compatible hardware
Sewing
Sewn Loop
23.21 kN MBSmean 24.16 kN · n = 5measured W26AC
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Join Stitch
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| Sewn LoopPattern 504 | Join StitchPattern 2x504 | |
|---|---|---|
| Pattern | 504 · Diamond ramp for 20 mm webbings | 2x504 · Double diamond ramp for 20 mm webbings |
| Pattern dimensions | 160 × 16 mm (L × W) (6.3 × 0.6 in) | 325 × 16 mm (L × W) (12.8 × 0.6 in) |
| Opening size | 140 mm (5.5 in) | Not applicable |
| Webbing fold | 305 mm (12.0 in) | Not applicable |
| Overlap length | Not applicable | 335 mm (13.2 in) |
| Sleeve length | 200 mm (7.9 in) | Not applicable |
| Bobbin thread | Amann Xtreme Tech with Dyneema · 220-tex · Yellow | Amann Xtreme Tech with Dyneema · 220-tex · Yellow |
| Needle thread | Amann Xtreme Tech with Dyneema · 220-tex · Red | Amann Xtreme Tech with Dyneema · 220-tex · Red |
| Stitches | 200 | 400 |
Test Data
Measured values from the current production batch (W26AC · Jan 2026). These update with every batch we produce.
Dimensions
- Width
- 20.0 mm (0.79 in)
- Thickness
- 2.5 mm (0.1 in)
- Weight
- 44 g/m (2.96 lbs / 100 ft)
Strength
- MBS
- 24.49 kN (5,506 lbf)
- WLL
- 9 kN (2,023 lbf)
- Alpine WebLock
- 25.28 kN (5,683 lbf)
- MightyLock
- 20.69 kN (4,651 lbf)
- Sewn Loop
- 23.21 kN (5,218 lbf)
Stretch
- ISA Stretch @ 5 kN
- 2.5%
- ISA Stretch @ 10 kN
- 5.5%
Standardized ISA stretch method, 200 mm gauge.
| Force | Stretch |
|---|---|
| 1 kN | 0.00% |
| 2 kN | — |
| 3 kN | — |
| 4 kN | — |
| 5 kN | 2.50% |
| 6 kN | — |
| 7 kN | — |
| 8 kN | — |
| 9 kN | — |
| 10 kN | 5.50% |
| 11 kN | — |
| 12 kN | — |
Stretch-curve method — read off each webbing’s load–elongation curve, not the standardized ISA gauge test.