Binoculars are much more comfortable to carry using the Zeiss Air Cell Comfort Carrying Strap for Binoculars or Cameras. Cushions of air, sealed within the material, spread the weight of the binoculars across the entire neck area. This makes them noticeably more comfortable to carry. On long observation days and extended hikes, the Air Cell Comfort carrying strap from Zeiss offers welcome relief for your neck and shoulders. The carrying strap is suitable for binoculars with a lens diameter of 30 mm or more. Manufacturer model #: 529113-0000-000. Makes carrying binoculars comfortable Spreads weight across the entire neck area Cushioning air sealed within the material Suitable for binoculars or camera Fits 30mm lens or more