O'NEILL Reactor-2 3/2mm Back-Zip Full Wetsuit - Black/Graphite, Large — Ultraflex Stretch & Wind-Resistant Panels

The O'Neill Reactor-2 3/2mm back-zip full wetsuit is a flexible, value-driven suit that delivers warmth, stretch, and easy entry for a wide range of water sports.

Built from O'NEILL's Ultraflex neoprene and finished with wind-resistant smoothskin panels, the Reactor-2 balances mobility and thermal protection without a premium price tag. Flatlock stitching and strategically reduced seams in paddle zones keep the suit comfortable and durable for long sessions in the water. The back-zip closure simplifies getting in and out while minimizing water intrusion, making this an excellent all-around choice for surf, paddle, and general watersports in temperate conditions.

How warm and flexible is this wetsuit for active paddling or surfing?

The 3/2mm thickness offers targeted insulation—3mm through the torso for core warmth and 2mm at the arms and legs for unrestricted movement. Ultraflex neoprene provides a soft, elastic feel so you can paddle and pop to your feet with less resistance.

• 3/2mm neoprene: torso warmth, limb flexibility
• Ultraflex material: high-stretch for dynamic movement
• Seamless paddle zones: fewer seams across shoulders and back
• Smoothskin panels: extra wind protection and insulation

Will it be easy to get into and keep water out?

The back-zip entry system is straightforward and fast, letting you suit up solo without wrestling. While not a completely sealed premium entry, the zipper is designed to limit flush and keep you comfortable during active use.

• Back-zip design: quick entry and exit
• Water-resistant closure reduces internal flushing
• Flatlock stitching: comfortable seams against the skin
• Ergonomic cut: designed for an efficient, snug fit

How durable is the Reactor-2 for frequent use and rough conditions?

Constructed for dependable season-after-season use, the Reactor-2 combines durable flatlock seams with resilient Ultraflex neoprene that resists wear from salt, sun, and boards. The suit's streamlined seam placement reduces stress points, which helps prevent premature tearing in high-motion areas.

• Flatlock-stitched seams: built for everyday durability
• Reinforced paddle zones: minimal seam placement for reduced wear
• Quality neoprene resists stretching out over time
• Modern styling maintains appearance through frequent use

What fit and sizing details should I expect for a Large?

The Large size covers chest 40.94"–43.30", waist 33.07"–35.04", and heights roughly 5'10"–6'0" for a close, performance-oriented fit. Expect a snug, wetsuit-specific fit that compresses slightly when wet for optimal thermal performance and reduced drag.

• Chest range: 40.94"–43.30"
• Waist range: 33.07"–35.04"
• Recommended height: 5'10"–6'0"
• Designed for close fit; size up only if between measurements

Who is this for? The O'Neill Reactor-2 3/2mm back-zip full wetsuit is aimed at beginners through experienced recreational riders who want a reliable, flexible suit without a high price. It suits surfers, paddleboarders, kayakers, wakeboarders, and snorkelers operating in temperate waters where 3/2mm thickness is appropriate. If you need a comfortable, easy-on wetsuit that performs across multiple activities and seasons, the Reactor-2 is a practical, well-made choice with O'NEILL's performance heritage.