I have been wanting, needing a baby prison for a while. I absolutely LOVE IT. I was so worried that the 50x50 wouldn’t be big enough so I got the 59x59. VERY easy to put together. Got it done in 30-45 minutes and that’s while feeding my little prisoner some cut grapes. He’s not very sure about it just yet but he was kind of interested when he realized he could get out through the little opening. I didn’t know it had suction cups on the bottom but that was was the topper. Best idea ever. It doesn’t slide that much. My only regret was getting a mat for it, just because hardwood floors are hard, obviously. Hoping this will keep him from escaping the living room or to go in the backyard when the older kids run through. Will be definitely be purchasing a second one just for outdoor use so that way he can walk around but be confined. I don’t want him to wonder off on an 8 1/2 acre property lol I did see some comments that people said the lining ripped. Honestly it seems like they were trying to hard to put it together and did it themselves because it’s very durable. I don’t think we will be having a problem.Easy to assemble. Kept my daughter contained and entertained during her morning hour of free play. She used it around 11 months and up. It didn't bend or tilt. It held up under her weight. The only issues I had was on disassembling. When removing the poles you have to be extra careful when pulling the poles out. If not you will rip the fabric. The other issue is the storage bag is so small. I'm not sure if it's meant to store the mat only but none of my tall poles could fit. The bag was too short and too small to fit everything. I have to find another way to store the poles and connector pieces.Love the playpen, just wish it came with a matI purchased this Super sized playpen for our labrador puppies. I needed a place to keep them safely enclosed.Assembly was easy since the instructions were so so simplified and easy to follow. It took about 30 minutes (there were a lot of little pieces); but most of the steps are repetitive; so once i got the hang of it~ was smooth sailing.The finished product surpassed my expectations.It’s impressively sturdy and durable. It stays securely in place with no movement whatsoever.Its been in nearly constant use now for 2 months.It’s holding up very well.These very energetic and highly active puppies~ they have plenty of space to play inside comfortably, so they don’t even attempt to get out~ they love their space!I really appreciate the Waterproof material. The liquids just beads right off of and cleans up easily. no lingering urine smell left behind at all.The Strong mesh sides are amazingly holding up well to thier nails and teeth.I keep it set up permanently so I cannot comment on disassembling it and packing it away while not in use. But it does come with a super handy storage bag To do so if need be.Overall I’m extremely happy with this playpen.Amazing price!It was easy to put together and my toddler was instantly fascinated with it. Then after she realized she couldn’t roam freely she became upset. :) I got the smaller size so it fits perfect and I am able to see her while I’m in the kitchen cooking.Had a little trouble with two of the T connectors breaking but the seller promptly sent out a new set. Thanks so much. Would definitely recommend for other runaways.50x50 great size, easy to put together and very sturdy. Downfall it did not come with a Mat, so make sure you order a mat. I ended up just going to my local store and getting a bag of the foam shapes and letters and putting 16 of them together and inside the base. Works great!I love it ! Everything it says it is!