Hydro Tech 2 fins are silicone bodyboard and bodysurf fins with separate left and right shapes, Hydro’s patented V-Rail blade and three drain holes, sold in six men’s sizes from US 4 to 13. They suit a bodyboarder who wants a pull-on fin, but the listings do not say whether the fins float.
These notes are for someone already looking at these fins. They cover what the Amazon listings say, how to pick a size and what they leave out. WaterSportHQ editors have not worn them. To compare other fins, see our bodyboard fins guide.
What the Hydro Tech 2 listings say
The listing this page used to link (B00UW62HFI) shows as currently unavailable. The fins are now sold under new Hydro-brand listings, one per size and color. The specs below come from those listings (main listing B0GQ3N9STJ, plus B0GRGPLGVM, B07NRZNXJ7 and B0GRH3QGM2), checked on 2026-10-21:
- Type: “Bodyboard & Bodysurf Flippers”, with a pull-on closure and no buckle strap.
- Material: silicone.
- Shape: asymmetrical, which Hydro says matches the foot’s natural motion and reduces leg twist.
- Blade: Hydro’s patented V-Rail, which Hydro says increases surface area for more thrust. The listing calls the design “Australian Award-Winning” but does not name the award.
- Drainage: three drain holes to let out water and sand.
- Use: the sport rows name bodyboarding, swimming and surfing, and one listing adds scuba diving.
The listings disagree on weight: 3.2 pounds on the Tang/Navy medium listing, 2.7 pounds on the Gun Grey medium, and 8.8 ounces on the old listing. The fit type row says “Full Foot Pocket” on one listing and “Regular” on another. No listing gives a blade length, a warranty or whether the fins float or sink.
Which Hydro Tech 2 size to get
The size menu on the listings gives:
| Size | US men |
|---|---|
| Extra small | 4 to 5 |
| Small | 6 to 7 |
| Medium | 8 to 9 |
| Medium-large | 9 to 10 |
| Large | 10 to 11 |
| Extra large | 12 to 13 |
Two sizes overlap: a men’s 9 falls in both medium and medium-large, and a 10 in both medium-large and large. The listings give no women’s sizes and no advice for a size that falls in two rows.
An older version of this page gave a different chart, with medium-large at 10 to 11 and extra large at 13 to 14. These notes use the current listings.
What the Hydro Tech 2 fins are not good for
- Wearing with dive booties. The listings do not say whether the fins fit over booties.
- Buyers who want fins that float. The listings do not say. The DORSAL fins below are listed as floating.
- Buyers who shop by women’s sizes. The size menu gives men’s sizes only.
Editors’ rule of thumb: when a fin’s listing does not say it floats, plan for it to sink, and use fin savers or tethers in surf.
See the Hydro Tech 2 fins on Amazon (pick your size from the menu)
The link opens Hydro’s main Tech 2 listing on one size and color. If that size shows as sold out, pick yours from the size menu.
How Hydro Tech 2 compares with DORSAL bodyboard fins
DORSAL’s bodyboard and bodysurf fins are also pull-on fins with a toe drain hole. The differences on the listings:
- Material and floating: DORSAL says its fins are 100% Malaysian gum rubber, “which naturally floats”. Hydro lists silicone and does not say.
- Sizes: DORSAL runs from men’s 3 to 4 (XX-small) to men’s 12 to 13 (X-large).
- Weight and warranty: DORSAL lists an item weight of 3 pounds and a limited lifetime warranty against defects.
See the DORSAL bodyboard fins on Amazon (listed as floating)
This page used to compare the Cressi Frog Plus. Cressi sells it as an open-heel scuba fin for neoprene boots, so it is not a bodyboard fin and these notes leave it out.
What to check before you buy
- Your shoe size against the menu, and which of two overlapping sizes the seller suggests.
- Editors’ rule of thumb: try the fit on dry land on arrival, while a return is still easy.
- Editors’ rule of thumb: add fin savers or tethers if you ride where a lost fin would be hard to find.