واقي عين مطاطي من Baader لعدسات عينية بقطر 40.5 مم - 41.5 مم - EYECP-4

I was worried it wouldn't fit my 41mm eyepiece, but it snapped on perfectly and stays put. The side wings really help block stray light during daytime birding.

The rubber is much softer and more pliable than the hard plastic cups on my other eyepieces, and the wing design actually blocks stray light from my glasses. I was surprised how much easier it is to center my eye now.

I finally got around to upgrading my eyepieces with this winged rubber cup, and the way it blocks stray light while observing is a game-changer. Fits snugly on my 1.25" eyepieces without slipping, and it's much more comfortable than the stock rubber.