| Specification Category | Yasuda YS-SF500 Flask Details | Yasuda YS-SF750 Flask Details | Yasuda YS-SF1000 Flask Details |
| Brand Identity | Yasuda | Yasuda | Yasuda |
| Model Series Number | YS-SF500 | YS-SF750 | YS-SF1000 |
| Total Fluid Volume | 500ml Storage Capacity | 750ml Storage Capacity | 1000ml (1 Litre Capacity) |
| Chassis Form Profile | Stainless Slim Steel Flask | Stainless Slim Steel Flask | Stainless Slim Steel Flask |
| Inner Vessel Material | Premium Grade 304 Stainless Steel | Premium Grade 304 Stainless Steel | Premium Grade 304 Stainless Steel |
| Outer Armor Material | Heavy-Duty 201 Stainless Steel | Heavy-Duty 201 Stainless Steel | Heavy-Duty 201 Stainless Steel |
| Thermal Shield Layer | Copper Coated Interior Matrix | Copper Coated Interior Matrix | Copper Coated Interior Matrix |
| Temperature Retention | 24 Hours Hot / Cold Lock | 24 Hours Hot / Cold Lock | 24 Hours Hot / Cold Lock |
| Sealing Lid Components | FDA Approved PP & Silicone | FDA Approved PP & Silicone | FDA Approved PP & Silicone |
| Fluid Security Architecture | Threaded Leak-Proof Lid Core | Threaded Leak-Proof Lid Core | Threaded Leak-Proof Lid Core |
| Aesthetic Theme Palette | Classic Brushed Stainless Steel | Classic Brushed Stainless Steel | Classic Brushed Stainless Steel |
| Maintenance Profile | Easy to Clean / Easy to Use | Easy to Clean / Easy to Use | Easy to Clean / Easy to Use |
Advanced Copper-Coated Insulation: Outfitted with a high-efficiency copper coated interior layer designed to reflect thermal radiation energy, minimizing heat dissipation inside the vacuum frame.
Verified 24-Hour Climate Lock: Performance-tested to deliver maximum temperature retention parameters, keeping your favorite beverages locked in at 24 hours hot or cold regardless of outside elements.
FDA-Approved Safety Components: Formulated with non-toxic, premium-grade FDA approved PP (Polypropylene) and silicone sealing components to guarantee 100% healthy, everyday chemical-free hydration.
Versatile Slim Capacity Footprint: Engineered in convenient 500ml, 750ml, and 1000ml capacity tiers built into a space-saving, travel-friendly slim silhouette that fits effortlessly into backpacks and car cup holders.