2. goggles A pair of tight-fitting eyeglasses, often tinted or having side shields, worn to protect the eyes from hazards such as wind, glare, water, or flying debris.

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Note added at 4 mins (2012-02-09 16:53:14 GMT)
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Since they are in PVC, I imagine those are hard shield to prevent penetration by debris, metal shavings, etc.

Another possible option.

Swimming Goggle
Item No:PWC716688

Description: 1) 100% UV protection, shatter-resistant 2) Polycarbonate high-impact lens 3) Anti-fog treatment 4) Soft PVC gasket and silicone strap provide comfortable user experience

http://www.promo-wholesale.com/custom/Goggles/index_3.htm

It seems likely to me that "skirt" is indeed the term intended here. This terminology is used for diving masks and is now being used increasingly for goggles, especially for the hybrid goggles that are now becoming popular. Hopefully you have an image that may provide clarification.

Some links and examples:

Aqua Sphere's new range of swim products are revolutionizing the swimming world with innovation and great quality. Established in the mid 1990's when it introduced the worlds first swim mask, the SEAL, Aqua Sphere are now producing a great range of eyewear products plus a comprehensive range of swim products.
Aqua Sphere goggles use a unique seal, that's not only very soft and comfortable to wear but it won't ever leak either. The soft skirt sits comfortably on the skin and creates an air tight barrier that doesn't let the water in.
http://www.simplyswim.com/docs/AquaSphere.aspx

Seal XP™ Swimming goggles
The Seal XP swimming goggles from Aqua Sphere are a hybrid goggle that combines the superior visibility and exceptional comfort of the Seal Mask with the low profile and hydrodynamics of the Kaiman Goggles.
It has a flexible, one-piece frame and comfortable, watertight skirt that provides for hours of swimming and water sports enjoyment.
http://www.mikesdivestore.com/1021/Aqua-Sphere-Seal-XP-Adult...

And in a scuba diving context:

Silicone Skirt
You have a choice of a clear skirt or a black skirt. Clear skirts increase your field of vision, are less claustrophobic and are generally preferred by new divers. Black skirts can help you focus on a particular task such as photography without distraction.
There are also different designs of skirt to consider:
Feathered skirt edges - On the higher quality masks the rubber skirt thins towards the edge, this makes the portion touching your face much more flexible for a comfortable fit.
Double skirt - Almost all masks have this nowdays, a second inner skirt that runs around the inside of the mask which provides a double seal making the mask less prone to leaking.
http://www.simplyscuba.com/docs/ChoosingMasks.aspx