Umenice Compact Travel Umbrella - Windproof & Waterproof Folding Umbrella for Men & Women - Perfect for Travel, Commuting & Outdoor Activities

I was looking for a collapsable umbrella that would be very small and fit in by backpack easily, but have a large canopy cover. Most umbrellas either are small when folded and have a very little cover, or have decent cover but are big when closed. I looked around and ordered this because it appeared to have a large cover but collapse to small size, and it really does fit the bill! Length is exactly 11.5" closed, and diameter of the cover is 36" when open. It easily fits in my backpack, and I'm confident it will keep me (and the backpack on my back) dry.I haven't used it in the wind, but no umbrella is really "wind-proof" and I really wouldn't expect any to be.Also, some people complain that its hard to collapse the handle when closing it - I find that putting it against the ground or a wall and pushing the handle in is the most effective the way to do it.Very happy with my purchase. It feels sturdy, and I hope its durable.