Ergonomic Chest Harness for SRS Tree Climbing Ascent Systems
The Petzl Sterno Chest Harness is designed to connect your ascent system and keep it raised while using Single Rope System (SRS/SRT) technique. Slim, low-profile, and thoughtfully engineered for all-day comfort, the Sterno straps sit wider on the shoulders to reduce neck chafing, while the unfixed front bridge gives you full freedom of movement in the tree.
Note: This product is not PPE (Personal Protective Equipment).
Key Features
- Keeps ascent system raised — connects directly to your SRS/SRT ascent system for efficient climbing
- Slim, low-profile design — comfortable for extended climbs without bulk
- Widely spaced shoulder straps — reduces neck chafing during long ascents
- Unfixed front bridge — provides great freedom of movement while working in the tree
- Three connection heights — for a more customized fit with your ascent system
- Hybrid metal buckles — adjustable, and can be fastened/unfastened for easy on and off
- Rear adjustment buckles — adapts to a wide range of body sizes
- Color-coded interior/exterior — makes it easy to identify correct orientation when putting on
Specifications
- Weight: 130 g
- Materials: Polyester, aluminum, plastic
Quick Decision Guide
- Climbing SRT/SRS and need to keep your ascent system raised? The Sterno is purpose-built for this.
- Need a foot ascender for your SRT system? See the CT Quick Step Foot Ascender or Petzl Pantin.
- Need a hand ascender? See the Petzl Ascension or CT Twin Ascender.
- Building a complete SRT system? Also check out the ISC Rope Wrench ZK-2.
Frequently Asked Questions
Is the Petzl Sterno PPE?
No — the Sterno is not classified as Personal Protective Equipment. It is a comfort and positioning accessory for SRS/SRT ascent systems.
How do I adjust the fit?
The Sterno features rear adjustment buckles to adapt to different body sizes, plus three connection heights for the ascent system to fine-tune positioning. The hybrid metal buckles allow easy on and off.
What climbing technique is the Sterno designed for?
It is designed for Single Rope System (SRS) or Single Rope Technique (SRT) tree climbing, where keeping the ascent system raised and positioned correctly is essential for efficient movement.