Lightweight alloy chest ascender designed to enhance vertical climbing efficiency. It can be used with a chest harness or shoulder straps to help maintain an upright posture. Enlarged, angled connection holes keep the device aligned with the body for improved comfort. When paired with a hand ascender, it forms an efficient multi-point climbing system. Simple to operate, it remains easy to use even with gloves on, and is compatible with 9–13 mm ropes.
| Model | Material | Size | Range of Rope | Breaking Strength | Max Load | Weight | Certification |
| A03 | Aluminum | 108.9×73.4×35.2mm | 9-13mm | 5kN | 140kg | 148.4g | EN 567 EN 12841 |