Cressi Alpha Ultra Dry Snorkel ES258020

The Cressi Alpha Ultra Dry snorkel ES258020 is a one-size adult snorkel with a top Aquastop valve, purge valve and flexible corrugated section. Its dry-top design is intended to keep water out, although customer feedback reports mixed experiences with water resistance and operation.

At a glance

A top Aquastop valve is described as keeping water out during use.
The expanded elliptical tube is described as increasing comfort and air-delivery capacity.
A purge valve and corrugated section near the mouthpiece are specified.
The listing describes the tube as ultra-flexible and the snorkel as made in Italy.

Price

£27.99Save 20%

Reference price: ~~£34.99~~

Price checked: 14 Nov 2026

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Pros and cons

Pros

Dry-top valve and purge valve provide distinct water-management features.
Flexible corrugated section can let the mouthpiece section move away from the mouth when used with diving equipment, according to the listing.
One-size adult design is presented for snorkelling and diving.

Technical specifications

14 specifications

Identity
Brand	CRESSI
Model	ES258020
Style	Alpha Ultra Dry
Age range	adult
Size	One Size
Colour	Blue/Light Blue
Department	Unisex

Construction and features
Dry-top claim	100% Dry
Tube	Ultra Felxible Tube
Origin	Made in Italy
Material type	Other
Dimensions and weight	35.56 x 10.16 x 2.54 cm; 179 g

Package details
Number of items	1
Included components	1 dry box

What to know before buying

Listing details to confirm

The listing describes the product as a snorkel, but its description also names the different Epsilon Dry model and its features. Confirm that the selected item is the Alpha Ultra Dry ES258020 and that the package details apply to it. Customer feedback is mixed on water resistance, ease of use and lid operation, and one customer says it is unsuitable for freediving. The dry-top claim should not be treated as a guarantee against water entry.

What’s in the box

Included

1 dry box

Who is it for?

A good fit for

Adult snorkellers looking for a dry-top snorkel with a purge valve.
Buyers who want a flexible tube and a one-size snorkel for surface use.

Less suited to

Anyone needing a verified guarantee that water cannot enter the snorkel.
Freedivers who require confidence that this particular model suits their technique.

Cressi Alpha Ultra Dry Snorkel ES258020 · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 2,447 ratings

5 stars73%73%
4 stars14%14%
3 stars4%4%
2 stars3%3%
1 star6%6%

Customer feedback highlights perceived quality, comfort, value and valves that work well. Reports on water resistance, ease of use and lid operation are mixed, including mentions of leaks and clip or lid issues. Snorkelling suitability is generally viewed positively, though one customer questions it for freediving. These experiences matter because the listing claims a dry-top valve, purge valve and flexible tube, but those stated features do not ensure consistent water resistance or ease of operation for every user.

Positive themes

Customers describe the snorkel as good quality and comfortable, and some say its valves work well.
Feedback generally regards it as suitable for snorkelling.

Mixed feedback

Water resistance receives mixed reports, with some users saying it stays dry and others reporting leaks.
Ease of use and lid operation are mixed, including reported clip-mounting and automatic re-opening issues.
One customer says the snorkel is not suitable for freediving.

Frequently asked questions

Does the Alpha Ultra Dry have a dry-top valve?

The listing describes a top Aquastop valve intended to keep water out. Customer feedback on water resistance is mixed, so this should not be read as a guarantee.

What other valve features are listed?

The product information specifies a purge valve and an expanded elliptical tube. The listing also mentions a corrugated section near the mouthpiece.

Is this snorkel suitable for freediving?

The title refers to freediving, but customer feedback includes a report that it is not suitable for freediving. Consider the intended technique before choosing it.