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Archie Mcphee Instant underpants. Just add water one pair

  • Based on 3,215 reviews
Condition: New
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$6.35 Why this price?
New Year Deal · 6% off was $6.74

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As low as $1 / mo
  • – 4-month term
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FREE 90-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Jan 13
Order within 19 hours and 22 minutes
Available payment plans shown during checkout

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Date First Available ‏ : ‎ February 1, 2018


Product Warranty: For warranty information about this product, please click here


Best Sellers Rank: #15,319 in Clothing, Shoes & Jewelry (See Top 100 in Clothing, Shoes & Jewelry) #3,335 in Men's Fashion #9,076 in Women's Fashion


#3,335 in Men's Fashion:


#9,076 in Women's Fashion:


Customer Reviews: 4.4 4.4 out of 5 stars (3,243)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jan 13

Yes, absolutely! You may return this product for a full refund within 90 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Funny Prank Gift!
Size: Medium (Pack of 1) Color: White
Put this in my son's Christmas stocking as a prank gift. He did hydrate the underpants and they are not great, but could get you through an emergency if you have urinary or bowel problems!
Reviewed in the United States on January 1, 2026 by Jason Miller

  • Gag gift
Size: Medium (Pack of 1) Color: White
Very funny
Reviewed in the United States on December 23, 2025 by Debbie Carbonier

  • Gag gift
Size: Medium (Pack of 1) Color: White
Fun gag gift for bachelorette party
Reviewed in the United States on December 2, 2025 by Tay

  • Funny.
Size: Medium (Pack of 1) Color: White
Funny.
Reviewed in the United States on October 9, 2025 by Robert

  • Hilarious!
Size: Medium (Pack of 1) Color: White
Hilarious gag gift!
Reviewed in the United States on September 18, 2025 by Greg Lebel

  • Gag gift supreme
Size: Medium (Pack of 1) Color: White
I am hoping this will cause a few laughs!
Reviewed in the United States on December 24, 2025 by LindaDavis

  • Gag gift hit
Size: Medium (Pack of 1) Color: White
I gave this as a gag gift for a friend's 75th birthday. Everyone thought it was very funny. I don't know what you'd want wet underwear for but as a gag gift it's a hit.
Reviewed in the United States on September 15, 2025 by Patricia Simmons

  • Awesome
Size: Medium (Pack of 1) Color: White
Awesome item
Reviewed in the United States on October 11, 2025 by Carla R Huff

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