SKU: 73400784393

Lavayoo XL aka The Monstrosity

Sale price$80.99 Regular price$89.99
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Ships within 48 hours · Estimated delivery Aug 24 - Aug 29

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Description

Lavayoo XL aka The MonstrosityLavayoo XL aka Monstrosity is my wife's FAVORITE HEATING PAD. It is HEAVY, coming in at 10 pounds. This one is not for your kids or for your lovely granny. It will literally keep your bed warm under blankets for over 6 hours. More lava sand = more thermal mass = heat lasts longer Its Science! It is the first one she goes to 90% of the time. It provides a quick and easy way to soothe aches, pains, stress, and anxiety. They are perfect for migraines,

Lavayoo XL aka Monstrosity is my wife's FAVORITE HEATING PAD. It is HEAVY, coming in at 10 pounds. This one is not for your kids or for your lovely granny. It will literally keep your bed warm under blankets for over 6 hours. 

More lava sand = more thermal mass = heat lasts longer...Its Science!

It is the first one she goes to 90% of the time. It provides a quick and easy way to soothe aches, pains, stress, and anxiety. They are perfect for migraines, back pain, neck pain, sore muscles, stiffness, poor circulation, cold feet, and more.

Just like any other heating or cooling pad, you can place your Lavayoo in the microwave or freezer for fast relief. What sets Lavayoo apart is the filling: odorless, ultra-rare lava sand—not food—so it lasts longer and stays clean.


Use Instructions

Heating:

  • Microwave: Heat for approximately 4 minutes to 5 minutes. Most microwaves work well at this time, but you may need to adjust slightly to suit your preference. Do not exceed 6 minutes.

  • Oven: Place on a cookie sheet to keep it clean. Heat at 200°F for 20–30 minutes. You may increase the heat slightly for faster warming, but avoid overheating—skin can burn at around 150°F.

Cooling:

  • Place the pad inside a sealed plastic bag to keep out freezer odors. Freeze for 2-3 hours, or store in the freezer so it’s always ready for use.

Washing:

  • Lavayoo pads can be washed by hand or in the dishwasher if needed, unlike food-filled heating pads. Watch this video to learn.

  • Dishwasher: Place on the top rack and run a normal cycle.

  • Drying: Place on a cookie sheet in the oven at 200°F for about 1 hour or until completely dry. Fine sand particles may come through the fabric; simply dust them off.

In Case of Damage:

  • The lava sand lasts forever, but the fabric may wear out over time. Replacement bags are available for purchase. Simply transfer the sand to a new bag and:

    • Sew it shut if you have a sewing machine, or

    • Use the included fabric glue to seal the opening.

  • You can also repurpose an old pair of jeans: cut off a leg, glue the ends, and create a new bag for free! Watch this video to learn how.

Size: 11" x 20"
Weight: 10 lbs
Filling: Natural Lava Sand
Fabric: 100% Organic Cotton

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 73400784393

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4.4 ★★★★★
Based on 27 reviews
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Verified Purchase
Dr. Scott Williams
Lexington, US
★★★★★ 5
Comfort and Appearance
Size: 9, Color: Black
The shoes were as advertised. Marc Joseph (I hav 4 other pairs) are the perfect shoes for me with my physical needs. Additionally they are exceptionally comfortable and attractive. This pair I returned because they weren’t quite the right fit for me. They are, like my other Marc Joseph shoes, very well made and very attractive.
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Reviewed in the United States on February 19, 2026
F
Verified Purchase
Francisco G.
Carnegie, US
★★★★★ 5
Premium feel
Size: 10, Color: Black
Very comfortable to wear.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
P
Verified Purchase
Patrick
Lowell, US
★★★★★ 4
Ok in a pinch. Can get better shoes for the price. Wide aren’t wide
Size: 9 Wide, Color: Black/Black
These were ok comfortable. Would have preferred at the price point to be a little more comfortable. For being a wide size, the shoe was rather tight on my feet. Quality is ok. It passed for the wedding. Would probably have taken more time to pick something different if I had the ability to. This was a last minute purchase.
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Reviewed in the United States on December 11, 2025
D
Verified Purchase
Damone A. Thomas
Dallas, US
★★★★★ 5
A must have in your shoe collection.
Size: 13, Color: Black
Very comfortable, very stylish, and in my price range gives me exactly what I was looking for in a shoe. Definitely a quality shoe. I’m 6’4, 309 lbs and size 13 shoe.
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Reviewed in the United States on July 24, 2025
R
Verified Purchase
Rodolfo Baca
Chelsea, US
★★★★★ 5
very good and very fast service.
Size: 10 Wide, Color: Black/Black
very well made shoes.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026

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