We have had it blown up just a few days 'to sample' in the living room until now and get it not quite inflated with our lack of foot pump, so I can not really say something about the 'tightness', but we got pumped in the air Now, after a week (as has temporarily 'sump' for a water ride served, who could not be built out due to snow for Easter) still for the most part clean.
From experience (own and of friends) I know the inflatable parts, such as spraying (rain) bow, while making palm trees, slide, etc. in the pictures a really great impression in the real but rather are only disruptive because inflatable pools and safe the larger but always lose in the long run a relatively large amount of air, which remain things like bows and palms are never really as straight on on the manufacturer's images and slide soon are too soft to still be able to slip down great. Slide are anyway only for very small children which, for older children such slides are too short and have just enough carrying capacity to really slip. Since the Palm in this pool but no other function has (such as water spray, which usually in arcs so is), it does not bother when this thing hang at an angle (does not have a valve, but is equally inflated to the edge). As our small, hard plastics slide slips much better, I have the inflatable slide so unceremoniously out of the pool cut out (the slide is indeed fix stuck in the pelvis, but to get out of some (non-inflatable) points, so they can be relatively easily cut without damaging chute or pool. It then sees only the bottom of the large basin nor the frozen remains where it has separated the slide). Advantage is also the same that you can decide for yourself where you placed the slide exactly or simply can completely take out.
The border consists of a double layer, the upper layer 'holes' is. By means of a permanently mounted connection, you can connect a garden hose and let the water shoot out of the holes up. In the pelvis there is additionally an access. I guess, so that water flows in, simultaneously with the spray of the holes. The practice is still identify whether even with already full pelvis can the spray still hernehmen, or only at the beginning, to the filling of the sink ...
1 star deduction so there's only because I can not say anything about the spray and the outdoor durability.