| Specification Category | Yasuda YS-FB750 Flask Details |
| Brand Identity | Yasuda |
| Model Designation | YS-FB750 |
| Total Fluid Volume | 750 ml Capacity |
| Primary Structural Material | 304 Food Grade Stainless Steel |
| Insulation Core Design | Double-Walled Vacuum Technology |
| Thermal Shield Layer | Internal Copper Coating Matrix |
| Temperature Retention Tiers | Keeps Hot or Cold for 24 Hours |
| Fluid Security Architecture | 100% Certified Leak-Proof Lid Assembly |
| Aesthetic Color Options | Matte Maroon + Black Dual-Tone Finish |
| Maintenance Profile | Easy to Clean / Easy to Use Geometry |
| Chassis Form Profile | High-Impact Rugged Vertical Cylinder |
Premium 304 Food Grade Stainless Steel: Fabricated with an elite food-safe 304 stainless steel interior and exterior chamber, protecting against corrosion and metallic tastes for completely healthy everyday hydration.
Advanced Double-Walled Copper Coating: Outfitted with a high-efficiency double-walled vacuum insulation architecture featuring an internal copper coating to mirror thermal radiation and eliminate heat transfer.
Verified 24-Hour Hot & Cold Lock: Performance-tested to deliver maximum temperature retention parameters, keeping your favorite beverages perfectly locked in at hot or cold states for up to 24 continuous hours.
100% Certified Leak-Proof Engineering: Built with a heavy-duty, high-seal lid matrix that prevents internal moisture escape, making the vessel entirely leak-proof even when stored upside down in travel bags.
Striking Maroon + Black Contrast Design: Crafted with a premium, sleek dual-tone Maroon and Black outer finish designed to resist fingerprint smudges and scratches while elevating visual presence.