Mares Pioneer 5mm Women's Wetsuit

The Mares Pioneer 5mm Women's Wetsuit is the warmest and most refined women's-specific one-piece we have tested, though its $835 price tag puts it in territory where it needs to be a near-perfect fit to justify the investment.

## Overview

Mares' Pioneer sits at the top of their women's wetsuit range, positioned above the Flexa as a suit designed specifically for divers who want the absolute best in warmth, fit, and construction. At $835 AUD, it is one of the most expensive women's one-piece wetsuits available in Australia, competing with premium offerings from Fourth Element and Waterproof. That price buys you trilastic panels, infrared-reflective lining, fully sealed seams, and a women's-specific anatomical cut that goes well beyond simply scaling down a men's pattern.

After testing across a range of conditions — from comfortable 20-degree summer dives at Montague Island to challenging 13-degree winter immersions at Victor Harbor — the Pioneer proved to be a genuinely impressive wetsuit. The warmth, flexibility, and fit drew consistent praise from female testers of varying body types, though the price and the inherent limitations of a one-piece design remain real considerations.

## Key Features

- **Women's anatomical cut**: The suit is patterned specifically for the female body, with adjusted torso proportions, shoulder width, hip-to-waist ratios, and limb lengths - **Trilastic panels**: Ultra-thin, highly elastic panels at key flex points including shoulders, underarms, lower back, and behind the knees for unrestricted movement - **Infrared reflective lining**: Interior lining that reflects body heat back toward the skin for enhanced warmth beyond what the neoprene thickness alone provides - **Glued and blind-stitched seams**: All seams are adhesive-bonded and partially stitched to prevent water entry through needle holes - **Back-zip entry**: Full-length rear zip with an internal gusseted panel to reduce water flushing - **5mm neoprene thickness**: Consistent 5mm throughout for balanced insulation

## The Good

- **Women's-specific fit is genuine and effective**: This is not a men's suit with adjusted sizing. The shoulder placement, chest contouring, waist-to-hip ratio, and arm-to-torso proportions are all designed around female body geometry. Female testers consistently noted the absence of the bunching under the arms, gaping at the lower back, and collar pressure that many unisex suits create on women's bodies - **Warmth is exceptional for 5mm**: The infrared lining, combined with sealed seams and the anatomical fit that minimises internal water movement, produces a suit that feels warmer than its thickness suggests. During multi-dive days at Jervis Bay in 16-degree winter water, testers reported staying comfortable through 50-minute dives without supplementary vests - **Trilastic panels deliver on flexibility**: The elastic panel placement allows a full range of movement without fighting the neoprene. Overhead reaching, deep knee bends for frog kicks, and torso rotation all happen naturally. For a 5mm suit, the freedom of movement is remarkable - **Sealed seams eliminate cold spots**: With no water channels along the seam lines, the Pioneer avoids the cold stripes that flatlock-stitched suits create. This is particularly noticeable on the inner legs and along the sides of the torso, where seam flush is most uncomfortable - **Back-zip gusset works effectively**: The internal flap behind the zip creates a genuine barrier to water entry. It does not eliminate flushing entirely, but it reduces the initial cold-water surge on entry to a brief, manageable discomfort rather than a sustained flush - **Build quality is top-tier**: The construction is meticulous throughout — neoprene panels are precisely aligned, seam bonding is consistent, and the zip operates smoothly. This is a suit built to last through years of regular use with proper care

## The Bad

- **Price is the highest in its category**: At $835, the Pioneer is more expensive than many women's drysuits at the entry level. For recreational divers who dive a handful of times per year, the cost-per-dive arithmetic is difficult to justify regardless of how good the suit performs - **One-piece cannot match two-piece torso insulation**: A single 5mm layer across the chest will always be outperformed by a two-piece suit offering 10mm of overlapping coverage in the same area. Divers who already own a two-piece setup may not feel a warmth advantage despite the infrared lining - **Size range, while good, cannot fit everyone**: Mares offers a reasonable spread of sizes, but women's body proportions vary enormously. Divers between sizes, or those with proportions that differ from the pattern — longer torsos, shorter legs, broader shoulders — may find the fit imperfect despite the anatomical design. Trying before buying is essential at this price - **Back-zip entry is less convenient solo**: Getting in and out of a back-zip suit without assistance requires flexibility and practice. A chest-zip design would be more practical for divers who often gear up alone, though fewer women's 5mm suits offer this option - **Not warm enough for the coldest Australian waters without supplements**: Winter diving in South Australia, Tasmania, or southern Victoria at temperatures below 14 degrees will still require a hood, gloves, and possibly an undervest to remain comfortable on longer dives - **Requires diligent care**: The sealed seams, infrared lining, and premium neoprene all demand proper rinsing, careful drying on a wide hanger, and storage away from heat and UV light. Neglecting maintenance at this price point is expensive negligence

## Verdict

The Mares Pioneer 5mm Women's Wetsuit sets a high standard for women's-specific dive exposure protection in Australia. The anatomical cut is thoughtfully executed, the trilastic flexibility makes it one of the most comfortable 5mm suits you can wear, and the combined warmth from infrared lining and sealed seams extends its usable temperature range impressively. Female divers who have struggled with ill-fitting unisex suits will appreciate how different a purpose-designed suit feels.

The price is steep, and the one-piece design means it cannot quite match a two-piece for raw core warmth. But for women who dive regularly in temperate Australian waters and want a single high-quality suit that fits properly and performs beautifully, the Pioneer is the one to beat. Make sure you try it on before purchasing — at $835, the fit needs to be right.

**Rating: 4.5 / 5 stars**