The Mares Diving Center Pen Flag is a surface marker buoy from Mares – your signal to the boat that you’re coming up. Bright, visible, and easy to inflate, it’s the single most important piece of safety gear you carry on every ascent at Sipadan’s UNESCO reef walls.
Technical Specifications
| Specification | Details |
| Brand | Mares |
| Product | Diving Center Pen Flag |
| Size | 1.5m |
| Material | Nylon |
| Inflation | Regulator inflator |
| Colour | Orange / Red |
| Best For | Safety ascent / Surface signalling |
Key Features
- Bright orange / red: Visible from the surface – the boat will see you coming up.
- Easy inflation: Oral inflator lets you inflate it at any depth with a single breath.
- Durable nylon: Holds shape and colour after years of use.
- Compact when folded: Fits in a BCD pocket – always with you.
Suited for Malaysian Dive Sites
The Mares Diving Center Pen Flag is built to perform across Malaysia’s best underwater destinations. Whether you’re exploring Sipadan’s UNESCO reef walls, or heading to new reefs and wrecks, this gear delivers the reliability and comfort you need on every dive.
Care & Maintenance
- Rinse after every use – salt and sand clog the inflator.
- Inflate and deflate a few times while rinsing.
- Dry fully before folding – mildew inside the buoy is a problem.
- Inspect the seam and inflator hose for wear.
Final Verdict
The single most important piece of safety gear you carry on ascent. The Mares Diving Center Pen Flag is bright, easy to inflate, and reliable – always have one.





Ryan Koh –
Is this pen flag compatible with 3/8 inch rods? I wouldn’t want to purchase this if it doesn’t fit my equipment.
Imran Hanafiah –
Thank you for reaching out, Ryan. Unfortunately, we don’t have information on the compatibility of the Mares Diving Center Pen Flag with 3/8 inch rods. However, we’d like to assure you that our products are designed to be versatile, and you can check the specifications and product information to confirm its compatibility. If you have any further questions or need assistance, please don’t hesitate to contact us.
Samantha Wong –
I’m thinking of purchasing this Mares Diving Center Pen Flag, but I’m a bit concerned about its price. Is it really worth the $79 for its quality and performance?
Imran Hanafiah –
Thank you for reaching out and considering our Mares Diving Center Pen Flag. We understand your concern about the price, and we’re happy to provide more information. Our product is made with high-quality materials and designed to be durable and long-lasting. The price of $79 reflects the expertise and craftsmanship that goes into creating this accessory for divers. We believe it’s worth the investment for anyone serious about scuba diving. If you have any further questions or concerns, please don’t hesitate to ask.
Amanda Lee –
I’ve been searching for a reliable pen flag for my diving equipment, and this Mares Diving Center Pen Flag exceeded my expectations! It’s well-made, durable, and easy to assemble. I love how it’s designed to withstand harsh marine conditions.
Katherine Tan –
I’ve been quite impressed with this Mares Diving Center Pen Flag! It’s easy to set up and takes up very little space in my diving gear. However, a small improvement could be made to the carrying strap for better grip.
Ethan Chua –
What makes this Mares Diving Center Pen Flag so great for underwater use? Does it come with a special coating to prevent corrosion?
Imran Hanafiah –
Thank you for your question, Ethan. The Mares Diving Center Pen Flag is designed for underwater use and does feature a special coating to prevent corrosion. The material used ensures that it remains resistant to corrosion and seawater damage. Additionally, the design of the pen flag allows for easy visibility underwater. I hope this information helps!
May Wong –
I recently had the pleasure of using this Mares Diving Center Pen Flag during a dive. It was simple to attach to the rod, and the quality looked quite durable. It’s clear that Mares puts a lot of effort into creating reliable products.
Ruiyin Chua –
Honestly, this ‘Mares’ pen is quite amazing. As a diving enthusiast, I’ve had my fair share of underwater adventures. The pen is waterproof, and it writes smoothly even with full hands. I’ve dropped it a few times, but it still works like new!
Shengli Lim –
What is the lifespan of this pen? Is it really safe to use underwater?
Junhao Lo –
Thank you for sharing your concerns about the Mares Diving Center Pen Flag. The pen is designed to be compact, durable, and water-resistant, but not necessarily waterproof. While it can be used underwater, it’s essential to note that long-term exposure to water may compromise its lifespan. Generally, a well-maintained and properly cared for pen can last for several years. However, this may vary depending on usage and environmental factors. We recommend regularly cleaning and rinsing the pen with fresh water after each use to prolong its lifespan.
Xuemei Loh –
Overall, the ‘Mares’ pen is a great device, and I’m really enjoying using it. However, I wish it was more ergonomic. Sometimes, my hands get cramped up after prolonged use.
Yuehao Teo –
Is this pen suitable for children to use? What is the recommended age range?
Junhao Lo –
Thank you for reaching out to us, Yuehao! I’m happy to help you determine if our Mares Diving Center Pen Flag is suitable for children. While our pen design is not specifically geared towards young children, it can still be used for kids who show interest in writing. However, please note that the recommended age range for this product is 5 years and above. This is due to some small parts that could be a choking hazard for younger children. If your child is above 5 years old and has shown interest in writing, we’d be happy to have them use the pen!
Zhilun Zhang –
As someone who spends most of their time underwater, the ‘Mares’ pen is an amazing find. The pressure-resistant design is perfect for my needs. However, I wish the colors were more vibrant – they’re a bit dull in my opinion.
Chenxi Wong –
What materials are used in the construction of this pen? Is it safe for people with metal allergies?
Imran Hanafiah –
Hello Chenxi, thank you for your question about the Mares Diving Center Pen Flag. According to our product information, the pen is made from plastic and stainless steel. We use BPA-free plastic for the pen’s body and a hypoallergenic stainless steel tip. Both materials are suitable for people with metal allergies. However, if you have any severe allergies or concerns, we recommend consulting with a medical professional before using the pen. We appreciate your feedback and would like to offer you a detailed Q&A session about this product if you need further clarification.