









🧳 Seal your essentials in the ultimate fortress of protection — because your gear deserves the best.
The Seahorse 300 Heavy Duty Protective Dry Box Case is a crushproof, impact-resistant, and IP67 waterproof storage solution featuring customizable Accuform foam inserts. Made in the USA with high-density polypropylene, it offers airtight sealing with pressure equalization latches to protect cameras, electronics, first aid kits, and more. Compact yet rugged, it comes with a lifetime guarantee, ensuring your gear stays safe no matter the adventure.




| ASIN | B001A1PT9A |
| Best Sellers Rank | #152,819 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #62 in Diving Dry Boxes #6,028 in Boating Equipment |
| Brand Name | Seahorse |
| Closure Type | Snap |
| Color | Orange |
| Customer Reviews | 4.8 out of 5 stars 744 Reviews |
| Global Trade Identification Number | 00659986100916, 06599861009160 |
| Handle Type | Carry Handle |
| Included Components | Case with foam |
| Item Dimensions L x W x H | 9.5"L x 7.35"W x 4.1"H |
| Item Type Name | Case with foam |
| Item Weight | 2.8 Pounds |
| Manufacturer | Seahorse |
| Manufacturer Warranty Description | Lifetime guarantee |
| Material Type | Polypropelene |
| Number of Compartments | 1 |
| Pattern | Solid |
| UPC | 659986100916 |
| Unit Count | 1 Count |
S**F
Rugged Orange SE-300F Case
Bought to house a Warn winch remote control used on a farm utility vehicle. It is perfectly suitable for anything less than extreme/expeditionary conditions. A tough case offering excellent weather resistance and protection against bouncing around over rough terrain. Foam is easy to custom fit. Lots of color choices. This is a very well made case with sturdy, reinforced hinges. Found it at a very affordable price ($22). Equally important, it's made in the USA, providing jobs for our workers.
S**T
Nice sturdy case with air pressure/vacuum release under one latch!
This thing is great. The foam in the bottom of the case is pre-perforated in small ~1/4 inch increments that can be easily separated by hand and any cut-out formation can be made. The down side of these pre-perforated form blanks is that if you make your hole slightly small for a tight fit, the small foam plugs/blank at the edges of the hole can catch of whatever you are inserting and start to rip loose. If you are careful when putting your protected items in an out of the formed holes, you should be okay. You just need to pay attention to that or your hole will start to lose its edges and get bigger as these pieces come loose. It is very well constructed and strong. One nice feature is the air release valve under the right-hand latch. These boxes really are air tight and if there is a difference in air pressure (even by the weather) there could be a vacuum in the case when it is closed which could make it difficult to open. When you unlatch the right latch, you can hear the air suck in or blow out the tiny hole that is opened when the latch is lifted. This equalized the air inside and outside the case and makes it easy to open.
W**I
Very Good Case
Use this to hold two Mevo Start cameras and their Ethernet PoE adapters and USB Cables. The size was just about right for this and it has plenty of cushion on all sides. The case is well built. I have no complaints about or issues with this case. I think the price compared to many other cases makes it a good value. I like it very much and Seahorse will be on my short list when I need another case for equipment.
J**L
Fits Canon T3i DSLR Body and Lenses
The build quality of this case appears to be up-to-par with Pelican as far as I can tell. I have a smaller Pelican 1120 case and they seem to be of similar quality. The foam feels a tad firmer and a little more difficult to pick and pluck, but not so much so that I really cared. As you can see in the photo, I was able to get a DSLR body (Canon T3i), 18-55mm lens, 24mm lens, extra battery, and a travel battery charger in this case (and close it without crushing anything). With the 24mm lens mounted, the case would still close but was really REALLY snug so I decided to unmount the lens. Yes, I could have gotten a slightly bigger case and kept the lens mounted, but my purpose in getting this was to have a smallish box that I could toss into a backpack or throw in the car or bring on a plane and be as compact as possible while holding all of the essentials... and more importantly, even a SLIGHTLY bigger case (even the Amazon version) would have cost me about 50 to 100 percent more depending on the selection. Overall, I'm quite happy with the purchase and would do it again.
C**T
Perfect hard carrying case for GoPro and accessories
This case is perfect for my GoPro and accessories. For the price I couldn’t ask for anything better. Yes it is not as rugged or strong as a pelican case but since 90% of people aren’t going to drive over their case with a truck this is plenty strong enough. Also lighter than a pelican case. Pro Tip: When planning where all your items will live in the case plan it out first with some grid paper 24 x 18 squares covering an area of 9” x 6.75” And do yourself a favor and use a razor blade to help pull the foam pieces out neatly.
G**D
Perfect air tight case for a high capacity battery.
This has stood up to getting kicked around the back hatch of my car, and has been just perfect for storing a large lithium jumper pack for jump starting vehicles. I bought it over a year ago, and it looks and functions just like the day I bought it and modded it for my items. The battery has enough capacity and chemical potential to do serious damage that I only feel safe carrying it around inside a fire bag inside a relatively air tight case. The pick and pull foam let me perfectly match the size of the bag and battery, along with the charging cable, and put in a nice storage slot for the manual. The air release valve under one latch is very handy, since I've had to crack the case open to get to the battery on days where the temperature dropped enough to make a vacuum seal. The price is low for what you get, and I would definitely use another box like this for a similar device. I'm going to get another one for packing a camera and other sensitive and easily crushed electronics when the pandemic is over and we can travel again.
J**.
Almost Perfect
Great case. It fits ONE full-sized pistol and two magazines if you dig the foam out and put 'em in vertically. In this case a Sig P220 and two (single stack) mags. I only dinged it a star because the foam is kind of a bitch to work with. The case is deep enough to swallow an old school Nikon or Canon, but the foam interior is only perforated in 1/4" sections vertically...to fit a slimmer object (such as a pistol), you'll want to save the pieces of foam you pulled out and lay them horizontally so your piece doesn't get swallowed up completely. A horizontal perforation about halfway down would make it a LOT easier to fit it to items that are less than the maximum depth. Great case at an attractive price, though, and I highly recommend it.
K**D
Used Case for Tesla Hitch Adapter
I used this case for a Tesla tow hitch adapter, and it almost fits perfectly. It fits, but an inch more depth would be perfect. I think if I had to do it again, I would have got a longer case to also fit the tow bar, but the case is solidly built and does what I bought it for. The Tesla branded case is a soft case, and is more expensive, so this was a great option. The Accuform foam is easy to modify to fit the hitch adapter. Overall, a sturdy, well-built case.
Trustpilot
5 days ago
1 week ago