






☕ Engineer your perfect sip—because your coffee deserves precision too!
This 12oz Onebttl stainless steel tumbler combines professional-grade 18/8 stainless steel with double-wall vacuum insulation to keep beverages cold for 9 hours or hot for 3. Featuring a spill-proof lid with a secure rubber gasket, it’s designed for busy engineers on the go. BPA-free and eco-friendly, it’s a durable, stylish gift-ready mug that blends functionality with a witty engineering theme.
| Brand | Onebttl |
| Model Number | LKUS-ENG-STAINMUG-12OZ |
| Color | Genius |
| Product Dimensions | 0.03 x 8.99 x 11 cm; 440 g |
| Capacity | 12 Fluid Ounces |
| Material | Stainless Steel |
| Special Features | Break Resistant, Insulated |
| Item Weight | 440 g |
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