Mares BCD Size Chart
Find your Mares BCD size using your body measurements below.
| Size | Weight | Height | Waist | Hips |
|---|---|---|---|---|
| 3XS | < 45 kg / < 100 lbs | < 155 cm / < 5'1" | < 75 cm / < 30 in | < 80 cm / < 32 in |
| XXS | < 55 kg / < 120 lbs | < 160 cm / < 5'3" | < 85 cm / < 34 in | < 90 cm / < 36 in |
| XS | < 55 kg / < 120 lbs | < 165 cm / < 5'5" | 70–90 cm / 27–36 in | < 95 cm / < 38 in |
| S | 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 |
| M | 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 |
| L | 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 |
| XL | > 80 kg / > 175 lbs | > 180 cm / > 5'11" | > 110 cm / > 43 in | > 120 cm / > 47 in |
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Description
Description
Mares Guardian Ergotrim Scuba Diving BCD integrates Airtrim 2.0 technology with an ergonomic configuration and a pneumatic inflation and deflation system for smooth buoyancy control in scuba diving gear. This BCD is designed to support reliable trim in varying diving conditions and to perform consistently as part of a gear setup for underwater exploration.
Ergotrim technology enables buoyancy adjustment in any diving position, while the Ergo command can function as a classic inflator for teaching or as Airtrim when used in its dedicated holder. The aircell is separated from the shoulders for greater comfort when inflated, and a high-lift aircell with winglets helps maintain lift and stability during dives.
The Monoplate backpack accommodates single or double tanks, and the system includes durable components such as 50mm swivel buckles, stainless steel D-rings, an adjustable cummerbund, high-capacity cargo pockets with supratex stretch panels, smart trim weight positioning, and an SLS weight system. Visual confirmation of weight pouch insertion and a personalizable label on weight pockets add practical usability, with color customization available via an optional kit in four colors and an integrated slot for a line cutter with the optional color kit.
Features
Features
- Ergotrim technology allows the diver to adjust buoyancy no matter the diving position
- The Ergo command can be used like a ‘classic’ inflator by an instructor when teaching, but will work as an Airtrim when in its dedicated holder
- The aircell is separated from the shoulders, meaning greater comfort in the shoulder area when inflated
- High lift aircell with winglets
- Monoplate backpack fits single or double tanks
- 50mm swivel buckles
- Stainless steel D-rings
- Adjustable cummerbund
- High capacity cargo pockets with supratex stretch panels
- Smart trim weight positioning
- SLS weight system
- Visual confirmation of proper weight pouch insertion
- Personalizable label on weight pockets
- Color customization possible with a dedicated additional kit available to purchase in 4 different colors (code 417966)
- An integrated slot allows the diver to add a line cutter with the optional color kit available to purchase separately
- Material: Cordura®420
- Rings: 5 x Stainless Steel D-rings
Specifications
Specifications
Payment & Security
Payment methods
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WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.









