Balance capacity with portability based on your hydration needs.
Capacity Guidelines:
| Activity Level | Recommended Size | Rationale |
|---|---|---|
| Sedentary (Office) | 600-900ml (20-30oz) | Enough for 2-3 hours without refilling |
| Moderately Active | 900-1200ml (30-40oz) | Covers half-day needs for most people |
| Very Active/Outdoor | 1.2-2L (40-68oz) | Minimizes refills in remote areas |
| All-Day (No Refills) | 2L+ (68oz+) | For those who prefer one fill daily |
Smart Sizing Strategy:
- Calculate your daily needs: Body weight (kg) × 30ml = minimum daily ml
- Consider refill access: More access = smaller bottle needed
- Weight tolerance: Larger bottles get heavy when full
- Storage space: Will it fit in your bag, car, or desk?
Special Features Worth Considering:
Temperature Control:
- Do you need 12+ hour cold retention?
- Do you drink hot beverages from it?
- Is condensation (sweating) a concern?
Integrated Technology:
- Time markers to track intake
- Smart lids with reminder lights
- Hydration tracking apps
- Temperature displays
Multi-Functionality:
- Infuser for fruits/herbs
- Built-in filtration system
- Storage compartments
- Convertible food containers
Carrying Systems:
- Integrated handles
- Shoulder straps
- Carabiner clips
- Protective sleeves with pockets
