Mares Guardian Ergo Trim, Dive BCD
Mares Guardian ErgoTrim BCD
The Mares Guardian ErgoTrim BCD is built for divers who want precise buoyancy control, long-term comfort, and dependable durability. This premium back-inflate BCD features Mares’ ErgoTrim technology, allowing buoyancy adjustment from multiple positions for smooth control and natural horizontal trim throughout the dive.
Designed for frequent recreational diving, the Guardian ErgoTrim delivers a balanced, ergonomic fit with stable weight distribution both at the surface and underwater.
Why Divers Choose the Guardian ErgoTrim
- Back-inflate design promotes natural horizontal trim and streamlined movement
- Ergo Trim system allows buoyancy adjustment from multiple positions
- Ergonomic harness provides comfort during long dives
- Balanced weight distribution improves stability and control
- Durable construction designed for frequent use
The Guardian ErgoTrim is ideal for divers who value intuitive buoyancy control and a comfortable, well-balanced BCD.
Key Features
- Back-inflate BCD design for improved trim and freedom of movement
- Mares ErgoTrim buoyancy control system
- Comfortable ergonomic harness with padded shoulder straps
- Integrated weight system with secure, quick-release pockets
- Durable Cordura construction for long-lasting performance
- Designed for balanced weight distribution and underwater stability
Perfect For
- Recreational divers seeking comfort and precise buoyancy control
- Divers who prefer a back-inflate BCD for natural horizontal trim
- Divers looking for a durable BCD suitable for frequent diving
- Divers who value ergonomic fit and streamlined performance
What’s In The Box
- Mares Guardian ErgoTrim BCD
- Integrated weight pockets (installed)
Fit and Sizing
The Mares Guardian ErgoTrim BCD follows Mares’ official sizing guidelines to ensure optimal comfort, trim, and buoyancy control. Selecting the correct size helps maintain stability both at the surface and underwater. If you are between sizes or plan to dive with thicker exposure protection, professional fitting through an authorized Mares dealer is recommended.
| Size | Body Weight | Height | Chest | Waist |
|---|---|---|---|---|
| X-Small | < 55 kg / < 120 lbs | < 165 cm / < 5'5" | 70–90 cm / 27–36 in | < 95 cm / < 38 in |
| Small | 50–70 kg / 110–155 lbs | 165–175 cm / 5'5"–5'9" | 75–95 cm / 29–38 in | 85–105 cm / 33–41 in |
| Medium | 60–80 kg / 130–175 lbs | 165–180 cm / 5'5"–5'11" | 90–115 cm / 36–45 in | 95–115 cm / 38–45 in |
| Large | 70–90 kg / 155–200 lbs | 170–185 cm / 5'7"–6'1" | 100–120 cm / 39–47 in | 105–120 cm / 41–47 in |
| X-Large | > 80 kg / > 175 lbs | > 180 cm / > 5'11" | > 110 cm / > 43 in | > 120 cm / > 47 in |
Note: Sizing information is based on official Mares manufacturer guidelines. If you are between sizes or plan to dive with thicker exposure protection, professional fitting through an authorized Mares dealer is recommended.





