Bests & Worsts Reviews from Amazon

For some background info, this is the first mattress I've ever bought, and I've been sleeping on it for about a month. After going in-person to a few mattress outlets, it seems I'm more likely to enjoy a mid-to-firmer bed. I'm sort of a side sleeper, sort of a belly sleeper (my hips and stomach are usually on the bed, and my upper body is usually on its side). I bought the black full 12 inch gel size. I bought this frame/base: https://www.amazon.com/dp/B006MISZOC/ref=cm_sw_r_cp_awdb_t1_32rMDbT9C43RD Okay so! The unpacking process was fairly simple, but it DOES unroll with the top of the mattress facing down. I was alone and managed to haul this thing around but it IS heavy. The straps on the sides of the bed actually did help quite a bit in this aspect. I really like this mattress. I knew I wanted a hybrid because they give you that firm innerspring base, but they often have a softer memory foam or pillow top that you can sink into. This mattress provides that. The top portion has just enough give that you sink into it, but you can only sink down so far until the firmer part of the bed shows up. That isn't to say you suddenly crush into a flat board, but more like the further into the mattress you go, the firmer it is. Though I can't really judge the cooling gel aspect because I'm not familiar with it, or how to identify if it's there, all I can really go off of is my experience. I'm the type of person that tends to run a little warm, and on a previous regular mattress sometimes I would wake up and be overheated. Personally, I find that sort of feeling comfortable in the winter, but it is a problem in the summer. Since getting this mattress I haven't experienced that. I'm sure doubling up on blankets in the winter will solve that for me, and I anticipate it'll be an awesome boon during the summer. The corners may not look like they have fully extended just due to the packaging method, but where the top actually ends, my mattress tops out at about 11.5"- I actually slept on my mattress same day so I'm not sure if that's affected anything. Most online resources actually note your body heat may aid in this process? I haven't noticed any sinking issues. I slept on one end of the bed for two weeks, and have been sleeping on the other end these past two weeks. I worried about this a lot, because in my inexperience, the bed would retain my shape a little when I would get in and out of it frequently/for long periods of time. After being out of it for a few hours, it's back to normal. I only had one minor problem- the way the bed was packaged has left sort of a roll in the middle of the mattress, for lack of a better term. Look- I'm a 22 year old college student. I can deal with a roll. It doesn't affect my sleep, and it's diminished with a little time, but it's there. It's easier to feel than see, the rest of the bed is fairly flat and then in the middle there is a small hill/divot situation. That's my second picture. Like I said, it's not very visible. 3 month update: Roll is gone, as far as I can tell. I've kept rotating where I sleep on it because it's sort of fun for me and my setup is flexible. I spend a lot of time in bed because I don't have a desk chair and use my computer from it, still haven't experienced sagging. Still love this bed! 12 month update: I was studying abroad for about 4 months, so this is about 8 months of active use, but I have to say: I still really love this bed. Sometimes when I flop onto it I have a moment of "HolyShitI'mSoGladIBoughtThisBed"- the feeling of the bed is great, no sinking issues. I sleep well on it, too. Sometimes too well. 3 year update: I am immensely pleased with this mattress and still sleep on it (and prefer it to my boyfriend's traditional firm mattress.) My specific mattress seems to be unavailable but similar mattresses by the company likely still carry this feel/quality. Still recommend it!