the peripheral field around the sides of the lenses, allowing the belayer to remain aware of their surroundings. The first belay glasses were invented in 2007 by climber Albi Schneider from Germany. [ citation needed] Gallery [ edit ] If you wear prescription glasses for your vision – or often wear sunglasses at the crag – it’s important that your belay glasses work with your other glasses. Some belay glasses are designed to be compatible to wear over other glasses, which works, although it can feel a little clunky. The Y&Y Clip Up can only be worn by being clipped to another pair of glasses, so they are a great choice for those who wear glasses all the time.

The sizes of the prisms vary between belay glasses. A larger prism will give you a greater field of vision, which is ideal for watching your climber. However, a smaller prism will allow you to see around the lens, which is useful for keeping an eye on what is in your peripheral vision, especially when you need to move around to belay.