These can be used with just one of the liners for a lighter weight bag (1.5kg). Useful 6cm loop on bean bag. You can attach a retracting cord to it when using on a car door. The double bean bag is made up of two bean bags (30cm x 23cm) joined together side by side and off centre.To use on a car door have the larger 'V' downwards. To use on a partly wound up window have the smaller 'V' downwardsThis still gives support to a lens even on a narrow window. A smaller double bean bag with carrying loops
