

IST SN204 Dry Top Snorkel — Blue/Clear
By IST · in Snorkels
From $41.65 at 2 shops
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2 retailers compared · Checked today
House of ScubaDIVEIN's take
Why buy from Amazon?
Amazon has a documented Prime delivery program that covers millions of items, and that is the most concrete order-related support behind buying here.
Worth knowing
Some customers report slower replies or needing more follow-up than expected when they asked for help after ordering. If an order needs post-purchase support, that part of the experience is not always smooth.
Some customers also report delivery problems after ordering. That keeps follow-up and delivery as the areas to watch if you place the order here.
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Shipping & returns

DIVEIN's take
Why buy from House of Scuba?
House of Scuba publishes a defined return process for eligible items, including when credit or a refund applies and where fees or exclusions can affect the outcome. If you want the retailer's own terms in place before ordering, that is the most concrete reason to buy here.
It also states a continental U.S. free-shipping offer with exclusions, so the order terms are not left entirely to guesswork. That does not guarantee every item qualifies, but the policy itself is part of the buying case.
Worth knowing
Some customers describe friction around returns or refunds, and some also report slower replies or needing extra follow-up when they asked for help after ordering. Read the return terms closely before placing the order, especially the condition, packaging, and fee limits that can change the result.
Accepted payments
Checkout on houseofscuba.com is served over a secure SSL (https) connection.
Shipping & returns
Quick Facts About IST SN204 Dry Top Snorkel — Blue/Clear
- Selected color: Blue/Clear
- Dry top with splash guard
- Corrugated flexible lower section
- Lower purge chamber and valve
Other divers also looked at

Move the mouthpiece aside when unused
The SN204 has a corrugated section between its main tube and mouthpiece. It allows the lower section to drop away from the face when it is not needed.
Dry-top construction with a flexible lower section
The IST SN204 combines a dry top and splash guard with a corrugated lower tube. A purge chamber and valve sit below the mouthpiece. This offer selects Blue/Clear.
A lower section that moves aside
The corrugated section allows the mouthpiece section to drop away from the face when it is not being used. That is useful to compare if you want the snorkel to move aside while using a regulator. Check the actual snorkel position with your mask and other equipment.
Top and purge valve serve different roles
The dry top and splash guard are at the upper end of the snorkel. The lower chamber and purge valve address water that collects at the mouthpiece end. These are separate parts of the design; a dry-top label should not be read as a guarantee that water can never enter.
Choosing this version
Match the SN204 model and Blue/Clear selection when comparing retailers. The retained specification establishes the flexible corrugated section and purge arrangement, but does not identify the mouthpiece material, so a silicone specification should not be assumed.
What divers ask about the IST SN204 Dry Top Snorkel — Blue/Clear before buying
Does the SN204 have a purge valve?
Yes. It has a lower purge chamber and valve.
That arrangement is separate from the dry top and splash guard.
What does the flexible section do?
The corrugated lower section allows the mouthpiece section to move away from the face when unused.
Check its position with your own equipment.
Which color is selected?
This is Blue/Clear.
Match that selection as well as the SN204 model name.
Is the mouthpiece silicone?
The retained specification does not establish the mouthpiece material.
It does confirm a corrugated flexible section, dry top and purge valve.
Specifications for IST SN204 Dry Top Snorkel — Blue/Clear
- Top
- Dry top with splash guard
- Lower section
- Corrugated flexible tube
- Water clearing
- Purge chamber and valve
- Selected color
- Blue/Clear
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