Very well made, with attention to detail, these Belay Glasses from Y & Y are excellent for reducing aches & pains in your neck when belaying whilst still being lightweight & resilient. High transparency prisms provide you with excellent optical performance to ensure clear sight of your climber as well as your surrounds without making you uncomfortable, this helps you concentrate better on the task at hand & provides better safety for the whole climbing party. Memory alloy arms are strong & have a high capacity to remember their original form even after being deformed to ensure they will always be comfortable & in the right shape. The stainless steel frame is strong & robust too whilst being extremely lightweight so as not to add too much weight to your kit bag. The silicon nose pads perfectly adapt to noses of all shapes & sizes. The contact of these nose pads is increased to reduce the pressure on the nose & provide better comfort. Crucially there is also a robust & secure carry case for extra protection when throwing in your sack for a day at the crag.