The ONTAP Mariner Mat is a foam mat to stand on while you shower or rinse off at camp: water runs through its holes, and the sand and grit stay underneath. We bought it in the Ocean colour, alongside the ONTAP Portable Camping Shower. To be honest, it hasn’t seen much use: most of the time we just stand on our thongs.
What’s in the box
It’s a single, flat mat with wavy ridges on both sides, rows of round drainage holes and a cut-out handle at each end. ONTAP made it with Clean Ocean Designs, and it comes in a card sleeve that slides off. Snowy’s lists a two-year warranty. Ours came in the same box as the ONTAP shower.
What we like
- Drainage holes let water through
- 2.5 cm of cushioning underfoot
- Light at 460 g
- Handles to carry and shake off
- Great quality foam
- Rinses off easily, dries fast
What we don’t
- Sized for one person standing
- $99 for a mat
- Thongs do much the same job

Quick Specs
| Spec | Details |
|---|---|
| Brand | ONTAP |
| Material | BLOOM foam (EVA, Algae)UV and water resistant |
| Weight | 460 g |
| Size | 61 × 44 cm |
| Thickness | 2.5 cm |
| Colour | Ocean |
| Warranty | 2 years |
Drainage and Grip
The top is a pattern of raised waves with round holes between them. ONTAP says the holes let water rinse straight through while keeping sand and grit from creeping back up onto your feet, and the 2.5 cm of foam protects your feet from sharp rocks and hot or cold ground.


Using It at Camp
We bought the mat together with the ONTAP shower, but honestly we haven’t used it much. When we rinse off at the back of the car, we mostly just stand on our thongs, and they keep our feet out of the dirt well enough. So the mat has spent most of its time packed flat in the car. When we have used it, it impressed us: the quality is great, it’s light, it rinses off easily and it dries quickly, so it doesn’t sit wet in the car.
ONTAP pitches it for more than showering: as a mat for getting changed out of a wetsuit, in front of a swag or as a doormat at camp. The foam is antimicrobial, so it shouldn’t get smelly from being packed away damp. If you like to shower barefoot, or you’re in and out of a wetsuit, it makes more sense than it did for us.


Conclusion: ONTAP Mariner MatConclusion
The ONTAP Mariner Mat is a 460 g, 2.5 cm shower mat made from algae-based foam, with drainage holes and handles, and it pairs naturally with the ONTAP Portable Camping Shower. The quality is great, it’s light, and it rinses off and dries quickly, but we haven’t used it much, because a pair of thongs does much the same job when we rinse off. At $99, it’s worth it if you shower barefoot or change out of a wetsuit a lot; otherwise, your thongs will do.
Great quality, light and quick to dry, but we rarely use it.
We bought it with the ONTAP shower, but most days we just stand on our thongs to rinse off. It suits barefoot showers, wetsuit changes and a clean spot at the door.
- Car campers
- 4WD tourers
- Beach & picnics
Only if you shower barefoot a lot. At $99 it’s a well-made mat, but a pair of thongs did the same job for us most days.




