By cupping the eye and obliterating exterior light this scope accessory forces the eye to adjust to obtain the maximum amount of light through the scope. Tests have resulted in extended use of twilight by up to 15 minutes. Suitable for spectacle wearers and most scopes.
To see more from Bisley, visit the
For all orders exceeding a value of 100USD shipping is offered for free.
Returns will be accepted for up to 10 days of Customer’s receipt or tracking number on unworn items. You, as a Customer, are obliged to inform us via email before you return the item.
Otherwise, standard shipping charges apply. Check out our delivery Terms & Conditions for more details.