Y & Y Vertical Clip Up Clip On Belay Glasses - Needle Sports Ltd
YandY ClipUp Belay Glasses Clip-On for use with Traditional Glasses or Sunglasses : Amazon.co.uk: Sports & Outdoors
Beacon Climbing Centre - What are you getting your better (belaying) half for Christmas? For glasses wearers, we have just what you might need to buy them - Y&Y Clip Up belay