I could not be more satisfied with this box (and that's not something I usually say with purchases these days.) Both the box, buckles, and the handle are made of thick plastic, that have a very quality, sturdy feel to them. Holding this box, you get the impression it will last longer than you will. The locking buckles are equally up to the task. It has a "burp" valve, allowing built-up pressure to exhaust out, while also not allowing water to come in. It has a large o-ring seal about the main opening, making a water-tight seal. I go kayaking out on the ocean (often alone, when I don't have a teammate to come along), and occasionally kayak-camp. This is my main first aid kit when kayaking. (Everything inside I stocked myself. I've never found a pre-made first aid kit I was happy with.) I haven't been able to come up with any cons for this product. I've owned it for about 8 months now, and taken it out on the water with me several times. (Although, I've been lucky enough to not have to pull it out and use it yet.) However, if I notice any flaws, I will update my review. Some little tips to help make this case even more useful: 1) Use magnets to attach things to the inside of the lid. For example: I ordered some small button-sized rare-earth magnets, and used Gorilla Tape to tape them to the inside of the lid (completely surrounded by tape on all sides, so if I accidentally splash water into the case, the magnets won't rust from the saltwater). Then I was able to stick my medic shears to the magnets. So when I flip the box open, my shears are right there and ready to grab in an emergency. I also used this method to attach a few hemostat pliers (they look like scissors, but are really little pliers that can be used to clamp squirting arteries/veins, etc.). 2) I recommend adding some reflective tape to all sides of the outside of the box. That way in an emergency at night, it is easier to find when shining a flashlight around. Also, since it floats, if it ever gets dumped over the side of your boat in the dark, shining a light around will make it easier to spot. (Although, everything on your kayak should be lashed down.) All in all, I could not be happier with this purchase. I can't say enough how much it looks like this company put a lot of time and effort into making a quality product (rarely said words these days). I am glad I bought this product, not just for this purchase, but because it gave me the confidence to come back and purchase more for my other first aid kits I keep in the house, car, work, etc. If you're looking for things to stock it with (while this is all subject to what environment you're going to be in and your medical experience), here are some general recommendations (all can be found on Amazon): I strongly recommend the Israeli battle bandage. Hands down the best all-around bandage on the planet.; it can handle almost any kind of wound in a pinch. Have a few of these in all of your first aid kits. They are very capable of saving a life. Quality, pre-made windlass tourniquets Clotting powder Shapeable splint Silicone spray-on bandage Medic shears (to cut away clothing when trying to find the bleed) A collection of many different sized/shaped quality bandages (Band-Aids), with a good supply of waterproof bandages if you're going to be around water or rain. Don't cheap out on bandages either. You don't want to find that that cheap bandage you bought doesn't actually stick and keeps falling off when you're out in the middle of nowhere. Triangle sling (large piece of triangular cloth that can be used as an arm sling, among other things) If you have extra space to fill, gauze can come in real handy, but takes up a fair bit of space in a kit Past that, you need to consider the environment you'll use this in, and the people that are most likely going to need it, and stock it for them (like extra prescription medications, etc.)
