Used Hollis DX-300X Technical Expedition-Grade Drysuit w/ 5mm Neoprene Socks
In stock — ships from Irvine, CA
This item is currently on backorder. Order now to reserve yours, and we will ship it as soon as it is back in stock.
Used Hollis DX-300X Technical Expedition-Grade Drysuit w/ 5mm Neoprene Socks - L (Large) / Acceptable is backordered and will ship as soon as it is back in stock.
Pickup currently unavailable at 23D
Wetsuits
Neotek V2 8/7/6 & 4/3 Wetsuit
| SIZE | WEIGHT (lbs) | HEIGHT (in) | CHEST (in) | WAIST (in) | HIP (in) |
|---|---|---|---|---|---|
| SM | 135 – 150 | 5'6" – 5'8" | 36 – 38 | 29 – 31 | 35 – 36 |
| MD | 155 – 170 | 5'8" – 5'10" | 38 – 40 | 31 – 33 | 37 – 39 |
| ML | 165 – 180 | 5'9" – 5'11" | 40 – 41 | 32 – 34 | 38 – 40 |
| LG/SH | 170 – 185 | 5'7" – 5'9" | 41 – 42 | 33 – 35 | 39 – 41 |
| LG | 175 – 190 | 5'10" – 6'1" | 41 – 42 | 33 – 35 | 39 – 41 |
| XL/SH | 185 – 200 | 5'8" – 5'10" | 42 – 44 | 35 – 37 | 41 – 43 |
| XL | 190 – 205 | 5'11" – 6'3" | 42 – 44 | 35 – 37 | 41 – 43 |
| XXL | 205 – 220 | 6'0" – 6'3" | 44 – 46 | 37 – 39 | 44 – 46 |
| XXXL | 230 – 260 | 6'1" – 6'4" | 47 – 50 | 40 – 43 | 47 – 50 |
Drysuits
DX-300X Drysuit
| SIZE | LBS | IN | IN | IN | IN | IN | IN |
|---|---|---|---|---|---|---|---|
| XS | 120 - 145 | 63 - 66 | 32 - 36 | 26 - 30 | 32 - 36 | 26 - 28 | 7 |
| SM | 135 - 155 | 66 - 68 | 34 - 38 | 28 - 32 | 34 - 38 | 27 - 29 | 7 |
| MD | 150 - 175 | 67 - 70 | 37 - 40 | 30 - 34 | 35 - 39 | 28 - 30 | 8 |
| ML | 170 - 195 | 69 - 72 | 38 - 42 | 32 - 36 | 37 - 41 | 29 - 31 | 9 |
| LG | 185 - 210 | 70 - 73 | 40 - 44 | 34 - 38 | 39 - 43 | 30 - 32 | 9 |
| XL | 210 - 240 | 71 - 74 | 42 - 46 | 36 - 40 | 41 - 45 | 31 - 33 | 10 |
| XXL | 235 - 265 | 73 - 76 | 44 - 48 | 38 - 42 | 43 - 47 | 32 - 34 | 11 |
| XXXL | 260 - 295 | 74 - 78 | 46 - 50 | 40 - 44 | 45 - 49 | 33 - 35 | 11 |
Fins
F-1 Fins
| REGULAR | XL | XXL |
| 7-9 | 10-12 | 13-15 |
F-2 Fins
| SMALL | REGULAR | XL |
| 4-6 | 7-9 | 10-12 |
Condition Note
- Open Box: Generally unused, returned from a customer, with minor blemishes that are not noticeable. Original packaging may be damaged or missing.
- Like New: May be slightly used but looks almost new, with minor blemishes that are not noticeable. Original packaging may be damaged or missing.
- Very Good: Shows signs of use with a few more blemishes. Original packaging may be damaged or missing.
- Good: Shows more signs of use with noticeable blemishes. Original packaging may be damaged or missing.
- Acceptable: Heavily used with more blemishes. Original packaging may be damaged or missing.
Payment & Security
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Product Information
Hollis DX-300X Technical Expedition-Grade Drysuit is designed by technical divers, for technical divers. Developed over three years in demanding conditions, it delivers maneuverability and comfort while maintaining long-wearing durability for serious scuba and diving missions. The suit integrates a heavy-duty outer layer, a multi-layer water barrier, and a soft inner liner to balance warmth, mobility, and reliability in challenging environments.
The DX-300X combines a 12-layer Butyl Mass core with an outer Nylon Cordura shell, achieving dependable water tightness and resistance to chemicals and ozone. An inner silk-weave polyester liner offers easy donning and comfortable wear for extended dives, while the patented BIAS cut with a telescopic torso increases freedom of movement and reduces air migration. Wide flat seam construction minimizes leak-prone areas for safer diving gear performance.
Designed for expedition diving, it integrates a low-profile YKK zipper and SiTech silicone seals, including Neck Tite and Quick Cuff wrists, to maintain a secure seal and smooth operation under water. Practical features include two large Velcro bellows pockets with internal D-rings, double-thickness kneepads, 5mm neoprene socks, and adjustable suspenders for a tailored fit across conditions.
- Materials: outer Nylon Cordura shell, 12-layer Butyl Mass core, silk-weave inner liner for comfort and easy donning
- Durability: puncture and abrasion resistance with tear strength over 300 N; wide flat seam construction
- Mobility: patented BIAS cut with a telescopic torso for greater range of motion and reduced air migration
- Seals & closure: YKK low-profile zipper; SiTech Neck Tite silicone seals; SiTech Quick Cuff wrist system
- Pockets & access: two large Velcro bellows pockets with internal D-rings
- Knee protection: double-thickness kneepads for abrasion resistance in demanding environments
- Thermal comfort: 5mm neoprene socks for warmth and protection
- Fit & adjustability: adjustable suspenders provide a secure, customizable fit
| Brand | Hollis |
| Model | DX-300X |
| Suit Type | Technical expedition-grade drysuit |
| Outer Shell | Nylon Cordura |
| Core | 12-layer butyl mass |
| Inner Liner | Silk weave |
| Tear Strength | Over 300 N |
| Cut | Patented BIAS cut with telescopic torso |
| Zipper | YKK low profile |
| Neck Seal | SiTech Neck Tite silicone |
| Wrist Seals | SiTech Quick Cuff system |
| Pockets | Two large hook-and-loop bellows pockets with internal D-rings |
| Knees | Double-thickness kneepads |
| Socks | 5 mm neoprene |
| Suspenders | Adjustable |
⚠️ 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.














