Engineered with input from climbing legend Adam Ondra, the Mammut Adam Ondra Sender Light Harness is built for one thing: pure performance on the wall. Whether you're redpointing your project or pushing your limits indoors, this is a harness designed to be at one with the climber - so you can focus entirely on the send.

Size	XS	S	M	L
Waist(cm)	63-70	69-76	76-84	83-91
Leg(cm)	45-51	49-55	53-59	57-63

Developed for elite competition, this ultralight harness delivers exceptional freedom of movement with a stripped-back, precision fit. Elastic leg loops mould seamlessly to your body, eliminating the need for adjustment while maintaining comfort on long burns and hard hangs. The minimalist construction keeps bulk to an absolute minimum, without sacrificing support where it matters most.

Two reinforced gear loops provide just enough capacity for sport climbing essentials, each tested to handle serious loads, while the ultra-strong Dyneema belay loop ensures durability session after session. From steep sport routes to indoor circuits, every detail is tuned for efficiency, lightness, and total control.

Inspired by Ondra’s philosophy - gear you don’t even notice, this harness delivers that barely-there feel. As he puts it, it’s so light “you don’t even feel you have it on.”

Intended Use: Sport Climbing, Gym Climbing.

Features

• Elastic leg loops for a perfect fit without adjustment buckle
  
• Optimised design for excellent hanging comfort
  
• Two reinforced gear loops (tested to 25 kilograms load each)
  
• Extra-strong Dyneema belay ring
  
• Lightweight and small pack volume
  
• The indicator in the tie-in loop shows when the harness needs to be replaced
  
• Compact storage bag included
  
• Main materials: HMPE (high-modulus polyethylene), 100% recycled ripstop polyamid 6, and 7075 aluminum buckle

Specification

• Adjustable leg loop: No
• Unisex design
• Weight: 213g (M)
  
• Materials: 

  80% HMPE, 20% Polyamide