500g Sodium Thiosulphate Pentahydrate 99% Extra Pure

500g Sodium Thiosulphate Pentahydrate 99% Extra Pure

Marsoni

M251S

$11.46

Get it in 3 business days with 1 day shipping. Friday, May 29

500g Sodium Thiosulphate Pentahydrate 99% Extra PureActive ingredients: Sodium Thiosulphate Pentahydrate 99% Extra Pure Confirming to BP, USP. CAS No. 10102 17 7. Molecular Formula: Na2S2O3. 5H2O. Molecular Weight: 248. 17. Grade: Extra Pure. MSDS DataSheet can be sent upon request. Designed for use in professional laboratories but is an ideal choice for science classrooms and Experiments. If you need custom order with different sizes design, please contact us. Safely Packaged to avoid being damaged

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Finally, comfortable underwear that don’t end up giving me a wedgie. I have a round booty and most cuts of underwear end up shifting as I walk and sit. The hem of the underwear comes right under my cheeks and the lightweight material ensures there’s no panty line and no shifting to where I don’t want them! I’m definitely purchasing more.

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Reviewed in the United States on May 17, 2026

Verified Purchase

Amazon Customer

Lowell, US

★★★★★ 3

Ehh

Size: Medium, Color: Multicoloured E-(5-pack)

Very thin, still comfy but very thin material. Super soft though. I've worn and washed and they have held up but I won't be repurchasing bc these are so thin

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Reviewed in the United States on April 14, 2026

Verified Purchase

Grma4m&m

Fort Morgan, US

★★★★★ 5

They’re fantastic!!!!

Size: X-Large, Color: Multicoloured E-(5-pack)

My clothing size is 16/18 and XL. Even though Amazon suggested a size XXL, I ordered my normal XL and they fit perfectly. The fabric for this style is 92% bamboo viscose and is amazingly soft and almost silky feeling. I had ordered a different boy short in this brand but they were 80% bamboo viscose and the fabric was significantly heavier. I returned those and ordered these.

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Reviewed in the United States on April 25, 2026

Verified Purchase

Adia

Lowell, US

★★★★★ 5

My favorite underwear

Size: Medium, Color: Multicoloured C (5-pack)

Super comfortable!! They are soft and breathable. No pinching, no shifting, and relatively invisible in skirts, pants, and loose dresses. True to size. Excellent quality, holds up well. Only thing is that the wording on the front does come off after a few washes, so you have to differentiate the front from the back of the underwear by how high the seam comes up. I almost exclusively wear this underwear now, I love it!

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Reviewed in the United States on April 30, 2026

Verified Purchase

Musicbookfan

Louisville, US

★★★★★ 5

Incredible Comfort

Size: Large, Color: Multicoloured F (5-pack)

Amazing; I’ll be ordering more. Super soft, lightweight, smooth under clothes, incredible comfort! Best underwear! I ordered these because I’m tired of underwear lines when wearing biker shorts/leggings. Other boy shorts were too long or the bottom hem too thick and both of those issues left lines around my upper leg. THESE are *just right* - perfect length and fit. No panty lines on close fitting pants, comfortable under other pants and dresses, great with jumpsuits, and fit well under slip shorts with dresses. NOTE: These take longer to dry, than similar clothes, in the dryer. No shrinking though. SIZE: I ordered these in size L and they fit perfectly. A little snug when first on but they loosened up. For reference I’m 5’4” tall, about 175#, carry my weight in my hips and backside,wear size L sweats/pajamas/loose pants, size 12 jeans.

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Reviewed in the United States on September 23, 2025