They are a one size fits all novelty gift. They don’t have a size written anywhere on the packaging.

you will get wet underpants? right?

Gave as a gift. No underpants materialized. They called. Asked "What the @##$&!!!

As this showed up under my search for "Grocery", can I assume that they are edible underwear?

No, they are a novelty item. A gag gift. Just add water and they rehydrate to wet granny panties. Let them dry and they a fairly soft. One size does not fit all. About a 12.

what if i use soda and not water?

You'll get different colored fizzy underpants

Archie Mcphee Instant Underpants Just Add Water One Pair

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€ 9.33

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Sold byAmazon IrelandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Instant comfort, instant cool—wear your wit on the go!

COTTON COMFORT - Made from 100% breathable cotton with medium stretch for all-day comfort and fit.
PACKABLE POWER - Ultra-compressible design fits anywhere—perfect for spontaneous adventures or emergency laughs.
ONE SIZE FITS MOST - General fit briefs designed to suit a wide range of body types effortlessly.
CONVERSATION STARTER - Officially licensed gag gift that guarantees smiles and social currency at any gathering.
HYDRATE WEAR MAGIC - Activate your underpants in seconds with just water—no ironing, no fuss.

Archie McPhee Instant Underpants are a one-size, 100% cotton brief that expands instantly when soaked in water. Lightweight and compressible, these officially licensed novelty underpants combine humor with practical comfort, making them a perfect gag gift or emergency essential for adults.

Specifications

ASIN	B004A2LW6A
ASIN	B079HQ37W3
Additional Features	Compressible
Age Range Description	Adult
Apparel Fabric Stretch	Medium Stretch
Apparel Fabric Weight Class	Lightweight
Best Sellers Rank	#89,443 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #19,046 in Men's Fashion #54,041 in Women's Fashion
Bottom Style	Briefs
Brand Name	Accoutrements
Color	White
Customer Reviews	4.4 4.4 out of 5 stars (3,330)
Date First Available	February 1, 2018
Fabric Type	100% Cotton
Fit Type	General Fit
Fit to Size Sentiment	Neutral
Garment Size Country	United States
Item Weight	0.09 Pounds
Leg Hem Opening Width	2.5 Inches
Manufacturer	Accoutrements
Manufacturer Part Number	12086
Material Type	Cotton
Number of Items	1
Pattern	Solid
Product Care Instructions	Machine Wash
Rise Style	Low
Size	One Size
Style Name	Instant Underpants Gag Gift Water
Style Number	STS-034
Subject Character	Other
Theme	Humor
UPC	791082455511 885623257198 739048120868
Unit Count	1 Count

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TrustScore 4.5 | 7,300+ reviews

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The delivery time was excellent, and the packaging was secure.

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