A very experienced birdwatching guide in a recent holiday recommended these over equivalent canon for image stabiliser bins, as I wanted something a bit lighter . They were a fantastic investment . I particularly like the automatic on/ off mechanism when you pull them horizontal to look. In terms of delivery and customer support etc from Stealth birding, they were delivered very promptly with no issues , and I was contacted soon after order as I forgot to select which colour free neoprene sleeve I wanted . Highly recommend , many thanks