Hollis Drysuits

Hollis Drysuits — Expedition-Grade Protection for Serious Cold Water

Hollis drysuits are built with the same technical-diving mindset that defines the rest of the brand — engineered for divers who genuinely need the protection, not for a casual cold-water dip. The flagship DX-300X is purpose-built for expedition diving where suit failure simply isn't an acceptable risk, and the Neotek semi-dry line bridges the gap for divers who want a meaningful thermal upgrade from a standard wetsuit without the cost or complexity of a full drysuit system.

At DiveCatalog.com, we carry the current Hollis drysuit lineup: the DX-300X expedition drysuit, the Neotek semi-dry range, and AUG 450 fleece undergarments. DiveCatalog.com is an authorized Hollis dealer.

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The Hollis Drysuit Range

DX-300X — Technical Expedition-Grade Drysuit

The DX-300X is Hollis's top-tier drysuit, built for technical and expedition diving where genuine cold-water reliability matters most. It ships with 5mm neoprene socks integrated into the system, providing solid foot insulation and a reliable interface with drysuit boots. Construction and materials are built to expedition-grade standards — this is a suit designed for divers who push into seriously demanding cold-water conditions, not occasional winter dives.

Neotek — Semi-Dry Wetsuit System

The Neotek line sits in the space between a standard wetsuit and a full drysuit. The Neotek V2 Semi-Dry uses enhanced seal construction at the wrist, ankle, and neck to significantly reduce water flushing compared to a conventional wetsuit, delivering noticeably better thermal performance without drysuit-level cost or the buoyancy-management training a true drysuit requires. The Neotek 8/7/6mm Coldwater Hooded configuration adds an integrated hood and steps up thickness for genuinely cold conditions — effectively Hollis's most thermally capable semi-dry option.

AUG 450 Fleece Undergarments

A drysuit provides no thermal insulation on its own — all warmth comes from what you wear underneath. The AUG 450 line (available as separate top and bottom pieces, in men's and women's sizing) is Hollis's fleece undergarment system designed to pair with the DX-300X, providing the insulating layer that turns a waterproof shell into a genuinely warm drysuit system.

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Semi-Dry vs. Full Drysuit — Which Do You Need?

The Neotek semi-dry line is the right call if you want meaningfully better thermal performance than a standard wetsuit, without the added cost of a drysuit, the need for drysuit-specific training, or the buoyancy management a true drysuit demands. The DX-300X full drysuit is the right call if you're diving genuinely cold water regularly — ice diving, deep technical dives in cold lakes, extended bottom times in cold ocean water — where staying truly dry, not just less wet, makes the difference between a comfortable dive and a cut-short one.

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Why Buy Hollis Drysuits from DiveCatalog.com?

• Authorized Hollis dealer — genuine products, full manufacturer warranty
• Full system available — drysuits, semi-dry wetsuits, and AUG 450 undergarments
• Expert sizing advice — our team can help you choose the right suit and undergarment combination
• Fast shipping — in-stock items ship within one business day
• Financing available — for the DX-300X expedition drysuit system
• Rewards program — earn points on every purchase

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Frequently Asked Questions — Hollis Drysuits

What is the difference between Neotek and the DX-300X?

Neotek is a semi-dry wetsuit system — it significantly reduces water flushing compared to a standard wetsuit, but it's still fundamentally a wetsuit. The DX-300X is a full drysuit, keeping you genuinely dry and requiring a separate insulating undergarment (like the AUG 450) for warmth. The DX-300X requires drysuit-specific training; Neotek does not.

Do I need the AUG 450 undergarment with the DX-300X?

Yes — a drysuit shell provides no inherent insulation. The AUG 450 fleece top and bottom (available in men's and women's sizing) is Hollis's undergarment designed to pair with the DX-300X and provide the actual thermal layer.

What does the 5mm neoprene sock integration on the DX-300X provide?

Integrated 5mm neoprene socks provide foot insulation and a consistent interface for drysuit boots, eliminating the need to separately source and fit a sock system.

Is the Neotek 8/7/6mm hooded suit warm enough for serious cold water?

It's Hollis's warmest semi-dry configuration, with an integrated hood and substantial thickness — suitable for cold-temperate diving. For genuinely cold conditions (ice diving, prolonged cold-water technical dives), the DX-300X full drysuit remains the more capable option.

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Browse the full Hollis drysuit collection above and reach out if you'd like help choosing between semi-dry and full drysuit protection for your diving.