Alaska Bear Natural Silk Sleep Mask Contour vs LifeStraw Go Stainless Steel Filtered Water Bottle 24 oz
What separates them
These two differ on 3 recorded specifications. The LifeStraw Go Stainless Steel Filtered Water Bottle 24 oz is ₹3,700 dearer.
Alaska Bear Natural Silk Sleep Mask Contour vs LifeStraw Go Stainless Steel Filtered Water Bottle 24 oz

Alaska Bear
Alaska Bear Natural Silk Sleep Mask Contour
₹1,299
Momme is the specification that separates real silk from the padded polyester sold as it -- 19 momme is a genuine weight, and it is why this does not slide off or crease the face overnight.
Full details →
Lifestraw
LifeStraw Go Stainless Steel Filtered Water Bottle 24 oz
₹4,999
What it does not remove is the specification that matters in India.
Full details →Who the Alaska Bear Natural Silk Sleep Mask Contour is for
Buy it if: Light sleepers, shift workers, and anyone who finds a flat mask presses on the eyes.
Avoid it if: Anyone who needs total blackout -- a small gap at the nose bridge is normal on any contoured mask.
Who the LifeStraw Go Stainless Steel Filtered Water Bottle 24 oz is for
Buy it if: Trekkers and travellers drawing from streams or taps of uncertain bacterial quality.
Avoid it if: Anyone treating groundwater for heavy metals, arsenic or salinity -- filtration does not address any of those.
Specifications, side by side
3 of 18 rows differ. Differences first.
| Specification | Alaska Bear Natural Silk Sleep Mask Contour | LifeStraw Go Stainless Steel Filtered Water Bottle 24 oz |
|---|---|---|
| Price | ₹1,299 | ₹4,999 |
| Clinical validation | Not applicable | Filter performance tested to US EPA drinking water standards for bacteria and parasites |
| Measurement range | Adjustable strap, 50 to 70 cm head circumference | Membrane filter approximately 1000 litres; carbon capsule approximately 100 litres |
| Stated accuracy | Not applicable | Removes 99.999999 percent of bacteria and 99.999 percent of parasites |
| Connectivity | None | None |
| Power source | Not applicable | Not applicable |
| Regulatory status | Not a notified medical device | Not a notified medical device |
| Stored readings | Not applicable | Not applicable |
| Warranty | 1 Year Official Brand Warranty | 1 Year Official Brand Warranty |
| Capacity | not published | 710 ml |
| Care | Hand wash, air dry | not published |
| Does NOT remove | not published | Viruses, dissolved salts, heavy metals, fluoride or arsenic |
| Filter | not published | 0.2 micron hollow-fibre membrane plus an activated carbon capsule |
| Flow | not published | Suction through the filter -- noticeably harder than an open bottle |
| Light blocking | Near total at the eye, small gaps possible at the nose bridge | not published |
| Material | 19 momme mulberry silk, both faces | not published |
| Profile | Contoured, with eye cavities that allow blinking | not published |
| Removes | not published | Bacteria, parasites, microplastics; carbon reduces chlorine and odour |
| Strap | Adjustable, with a flat rear buckle so it does not press when lying on your back | not published |
Every row is a figure one or both products record. A blank is a figure the catalogue does not hold, not a zero.
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