Mantra MK4
Sewn loops
QUICK SPECS:
- ISA Stretch
- 1.5% @ 5kN · 3.7% @ 10kN
- Design
- Flat, 100% PES
- Weight
- 76 g/m (5.11 lbs / 100 ft)
- MBS
- 40.8 kN (9,172 lbf)
- Sewn Loop MBS
- 33.73 kN (7,583 lbf)
- Width
- 25.3 mm (1.0 in)
- Thickness
- 3.3 mm (0.13 in)
Batch W25AI View batch report
Description
A new generation of an amazing longline webbing from Balance Community. Continuing the life of Mantra with the 4th version named Flight.
Mantra MK4: Flight is a brand new style of webbing with a natural low stretch weave and astounding features that make it great for lines of any length.
Flight is the next generation of longline webbing from Balance Community, optimizing for big distances and easy rigging.
Chunky and Strong!
A burly slackline webbing for the most demanding of lines.
Mantra MK4 is a blast from the past where big heavy slackline webbings were the norm. Clocking in at a whopping 76 grams per meter, Mantra is a beast! Rigging a webbing with this much weight can be an awesome experience. On one hand, any movement in the line will be greatly exagerated. On the other hand, since it's so heavy, getting it moving in the first place is much harder. If you are a stable walker, Mantra MK4 can be one of the most pleasant walking experiences out there. If you are a wild walker, it can be one of the hardest lines you've been on.
Because of how burly Mantra MK4 is with the amount of material in the weave and the multi-layer structure, it works fantastically as a perma-rig webbing. The majority of the strength of the webbing lies beneath the surfaces, giving it tremendous lifespan compared to lighter-weight webbings.
Soft Contrast
- Weave zoning
- Zones
- Weave structure
- Flat
- Weave features
- Multi-Layer Weave
Green and Purple - Easy on the Eyes
Green against Purple is a great contrast in colors, but it's a soft contrast that's easy on teh eyes. Easily spot twists without a jarring difference in colors across the length of your line. When your line flickers in the wind, the flashing of the 2 colors is very mild and pleasant to look at. A great feature for a webbing you are bound to spend tons of time on.
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
- Multi-Layer Weave
- Weave zoning
- Zones
Walkability
- Style
- Built for walking and training heavy lines
- Optimum tension
- 1.5 - 6.0 kN (350 - 1,350 lbf)
- Preferred lengths
- 100 - 500+ m (330 - 1,650+ feet)
Highline
- Highline approved
- Yes
- Backup length
-
How long should the backup be with a Mantra MK4 mainline?
Mainline Backup 50 m 53 m 60 m 63.6 m 100 m 106 m 120 m 127.2 m For any other length, make the backup 6% longer than the main.
Compatible hardware
- Webbing Anchors
- Webbing Grips
Sewing
Sewn Loop
33.73 kN MBSmean 36.1 kN · n = 5measured W25AI
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Join Stitch
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| Sewn LoopPattern 512 | Join StitchPattern 305 | |
|---|---|---|
| Pattern | 512 · Bartack ramp for 25 mm webbings | 305 · Double bartack ramp for 25 mm webbings |
| Pattern dimensions | 65.5 × 20 mm (L × W) (2.6 × 0.8 in) | 76 × 20 mm (L × W) (3.0 × 0.8 in) |
| Opening size | 139 mm (5.5 in) | Not applicable |
| Webbing fold | 210 mm (8.3 in) | Not applicable |
| Overlap length | Not applicable | 86 mm (3.4 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 | 176 | 197 |
Test Data
Measured values from the current production batch (W25AI · Apr 2025). These update with every batch we produce.
Dimensions
- Width
- 25.3 mm (1.0 in)
- Thickness
- 3.3 mm (0.13 in)
- Weight
- 76 g/m (5.11 lbs / 100 ft)
Strength
- MBS
- 40.8 kN (9,172 lbf)
- WLL
- 12 kN (2,698 lbf)
- Alpine WebLock
- 37.35 kN (8,397 lbf)
- MightyLock
- 32.37 kN (7,277 lbf)
- Sewn Loop
- 33.73 kN (7,583 lbf)
Stretch
Low effort rigging for big longlines.
A by-product of how much polyester is in Mantra is its fantastically low stretch. This low stretch is all natural; no post-weaving processing is done. A natural low stretch gives Mantra a smooth stretch curve that elongates organically rather than in a stiff and manufactured way, stabilizing the walking experience.
- ISA Stretch @ 5 kN
- 1.5%
- ISA Stretch @ 10 kN
- 3.65%
Standardized ISA stretch method, 200 mm gauge.
| Force | Stretch |
|---|---|
| 1 kN | 0.26% |
| 2 kN | 0.56% |
| 3 kN | 0.92% |
| 4 kN | 1.33% |
| 5 kN | 1.78% |
| 6 kN | 2.26% |
| 7 kN | 2.75% |
| 8 kN | 3.25% |
| 9 kN | 3.73% |
| 10 kN | 4.21% |
| 11 kN | 4.67% |
| 12 kN | 5.11% |
Stretch-curve method — read off each webbing’s load–elongation curve, not the standardized ISA gauge test.
