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- USA
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Ships within 48 hours · Estimated delivery Jul 4 - Jul 9
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Description
Engino Discovery Stem - Simple MachinesSIMPLE MACHINES MECHANISMS STEM KIT INCLUDES 5 different STEM sets, all combined into one fantastic package. BUILD 60 MODELS that cover the subjects of levers, the wedge, the wheel and axle, the screw, the inclined plane, the pulley, as well as the more advanced gears and linkages. Imagine the excitement of seeing their own creations come to life, all while learning about the laws of physics and engineering. EASY TO FOLLOW INSTRUCTIONS and it comes
- SIMPLE MACHINES MECHANISMS STEM KIT INCLUDES 5 different STEM sets, all combined into one fantastic package.
- BUILD 60 MODELS that cover the subjects of levers, the wedge, the wheel and axle, the screw, the inclined plane, the pulley, as well as the more advanced gears and linkages. Imagine the excitement of seeing their own creations come to life, all while learning about the laws of physics and engineering.
- EASY TO FOLLOW INSTRUCTIONS and it comes with 70 pages of theory and facts, accompanied by fun experiments to test newly acquired knowledge. Plus, a 16-page quiz section is included to test the children's understanding.
- FOR KIDS 9 and up, the STEM building toy also comes with a cutting-edge, interactive 3D app that lets children build in virtual reality. And it's not just us who think this toy is amazing - it's been chosen as one of the 21 best STEM toys and gadgets to get kids interested in tech.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.3 ★★★★★
Based on 1646 reviews
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Product Reviews
★★★★★ 1
This version doesn’t work
I used these 2 nights in a row. I was hoping Oracoat found a solution to the problem people like me have with the regular Xylimelts: irritation of gums. As others have noted the “sensitive” version doesn’t melt and the goo that remains can be difficult to remove. I didn’t have too much trouble after the first night. However, the second day after use, it was so hard to get the remains out, I wound up with a very sore spot from digging it out. I will toss the rest.
It’s too bad this effort fizzled. I hope Oracoat will find a solution For sensitive mouths. In the b meantime, I will use the original for a few nights and then stop before repeating. The idea behind the original product is fantastic. Unfortunately this attempt to make it usable for people with sensitive mouths hasn’t worked. Please try again.
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Reviewed in the United States on March 25, 2025
★★★★★ 5
Helped with Dry Mouth
Followed the instructions on the box and everything turned out amazing! Absolutely love the results and relief I felt
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Reviewed in the United States on April 21, 2026
★★★★★ 3
An improvement over the original product, but could be better
I had used the original Xylimelts a few years back for my night time very dry mouth. They worked very well, completely dissolving overnight, but they caused sores inside my cheeks. Recently I discovered this new version which was purported to be made without the offending ingredients. They don't work quite as well, as they don't completely dissolve, but so far haven't caused any irritation. My mouth isn't completely parched as it was without any product, so it is definitely better than nothing. There is a gel-like residue in the morning that needs to be scraped off the teeth. I think Oracoat has some more R & D to do.
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Reviewed in the United States on August 25, 2025
★★★★★ 4
These work well!
These work to keep my mouth moist for hours. The only downside is the glue stays in your mouth till you can scrape it out with your finger. I thought it would dissolve but it didn’t. Very grateful to find something that moistens my mouth for so long though. They’re easy to use too. Taste slightly sweet but otherwise I didn’t notice anything.
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Reviewed in the United States on October 8, 2024
★★★★★ 5
Xylimelts Sensitive
I was sensitive to the regular Xylimelts after a few months use. Painful gums and hives inside my lips and cheeks. The sensitive version immediately corrected the problem and I’ve been using them without issue for nearly a year. The product is a lifesaver for drymouth that occurred when I was sleeping.
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Reviewed in the United States on March 28, 2026