We bought this to take with us on the MS TRAM week-long bicycle ride where we camp, usually in open fields. We had seen others with one and as they sat in their shaded enclosure we broiled in the sun. It's light enough that we will use it in addition to our sleeping backpacking tent.
Sets up easily - easier with two but can be done with one. Several options for anchoring - stakes and pockets for sand if used on the beach. As others may have noted - toss a few ziploc bags in with the shade so you can put the sand in these and then put the bags in the pockets - keeps things cleaner.
Medium size will fit two folding lawn chairs comfortably.
Our experience with this store was excellent - price, shipping, response from customer service and communication were all excellent.
Pros:Packed size and weight
Ease of setup