The Mares Donut Bladder Twin Tank is a jacket-style BCD from Mares – the most popular format for recreational divers in Malaysia. It wraps around you comfortably, distributes lift evenly, and gives you stable, neutral buoyancy on every dive from Perhentian’s crystal-clear waters to the shallows.
Technical Specifications
| Specification | Details |
| Brand | Mares |
| Product | Donut Bladder Twin Tank |
| Type | Jacket BCD |
| Material | Cordura / Nylon |
| Lift Capacity | ~20 kg |
| Pockets | Multiple D-rings & cargo pockets |
| Weight Pocket | Integrated release |
| Best For | Recreational / Technical diving |
Key Features
- Jacket-style design: Wraps around you for a stable, comfortable fit – the most natural feel underwater.
- Integrated weight pockets: Quick-release weight system for safety and convenience.
- Multiple D-rings: Attach all your gear securely without clutter.
- Durable Cordura construction: Built to handle years of salt-water diving.
Suited for Malaysian Dive Sites
The Mares Donut Bladder Twin Tank is built to perform across Malaysia’s best underwater destinations. Whether you’re exploring Perhentian’s crystal-clear waters, or heading to new reefs and wrecks, this gear delivers the reliability and comfort you need on every dive.
Care & Maintenance
- Rinse thoroughly after every dive – salt and sand clog the inflation bladder.
- Inflate the bladder and let it dry fully before storing – prevents mildew.
- Lubricate the dump valve with silicone spray every few dives.
- Have it serviced professionally once a year.
Final Verdict
The jacket BCD is the workhorse of recreational diving, and the Mares Donut Bladder Twin Tank is a solid, reliable example. Comfortable buoyancy, good organisation, and a fit that works for most divers.




Tanya Lim –
This Donut Bladder Twin Tank exceeded my expectations in terms of its durability and seamless integration with my cylinder. Highly recommended!
Emily Wong –
Overall, I’m very satisfied with the performance of the Donut Bladder Twin Tank, but I wish it came with a carrying case or travel bag for easier transport.
Evelyn Toh –
What material is the blurb of the Donut Bladder Twin Tank made of, I’d like to know its durability in different water conditions?
Junhao Lo –
Thank you, Evelyn Toh, for reaching out to us. The blurb of the Mares Donut Bladder Twin Tank is made of rubber, providing excellent durability in various water conditions. Our rubber material is resistant to damage from sharp objects, abrasions, and extreme water pressure. Additionally, the Donut Bladder Twin Tank is designed to withstand a wide range of water temperatures, ensuring consistent performance in different diving conditions. We’re glad to hear you’re happy with your purchase, and we’d be happy to answer any more questions you may have.
Dominic Koh –
Does the Mares Donut Bladder Twin Tank have a safety valve to prevent over-pressurization? I’m concerned about its reliability during deep dives
Junhao Lo –
Thank you for reaching out and sharing your concern about the Mares Donut Bladder Twin Tank’s safety feature, Dominic. I’m happy to inform you that our product does come equipped with a safety valve to prevent over-pressurization. This feature ensures the tank’s reliability during deep dives. For a more detailed explanation, I recommend consulting the product’s manual or contacting our dedicated customer service team.
Marina Lee –
I’m really impressed by the 10-year warranty offered by Mares! Has anyone experienced any issues with corrosion or leaks in the water bladders?
Junhao Lo –
Thank you for your question, Marina! We’re glad to hear that the 10-year warranty has impressed you. To answer your question, we’ve had very few reports of issues with corrosion or leaks in the Donut Bladder Twin Tank. In fact, many of our customers have clocked in over 500 dives without experiencing any problems. That being said, we do recommend regular maintenance and inspections to ensure optimal performance. Have you had a chance to use the Donut Bladder Twin Tank on any of your dives?
Austin Tan –
Does anyone know if the Donut Bladder Twin Tank is compatible with other brands of underwater equipment? I’d love to use this with my existing gear
Junhao Lo –
Hello Austin, thank you for your question regarding compatibility with the Mares Donut Bladder Twin Tank. While the Donut Bladder Twin Tank is a great product for tec diving, compatibility with other brands of underwater equipment may vary. We recommend checking the Mares website or contacting their customer support directly for the most up-to-date compatibility information. You can also reach out to our customer service team and we will be happy to help you determine if the Donut Bladder Twin Tank is compatible with your existing gear.