# Wetsuit Thickness Guide

## Understanding Wetsuit Thickness
Wetsuit thickness is usually expressed in millimeters, e.g., 3/2 mm or 5/4 mm. The first number indicates the thickness of the torso, the second number refers to arms and legs. Thicker neoprene provides more insulation but reduces flexibility.

## Thickness Recommendations
- **Tropical Waters (24°C+ / 75°F+):** 1–2 mm or shorty suits  
- **Moderate Water (18–24°C / 65–75°F):** 3/2 mm suits  
- **Cold Water (10–18°C / 50–65°F):** 4/3 mm or 5/4 mm suits  
- **Very Cold (<10°C / 50°F):** 6/5 mm or full drysuits  

## Activity-Based Selection
- Surfing: Flexible 3/2 mm or 4/3 mm  
- Diving: 5/4 mm or full drysuit  
- Swimming: 2–3 mm shorty  

## Tips for Optimal Fit
- Ensure snugness around torso  
- Avoid excessive water circulation  
- Check movement flexibility  

## Conclusion
Selecting the right thickness keeps you warm and comfortable while performing water sports safely.