What thickness wetsuit do I need for freediving in Singapore?

For pool training in Singapore, a 1.5mm to 2mm wetsuit is ideal — enough to keep you comfortable without overheating. For open water trips to Indonesia or the Philippines, 2mm to 3mm works for most people. Cooler destinations like Japan may need 3mm to 5mm.

What is the difference between open-cell and lined wetsuits?

Open-cell (smooth-skin) neoprene sits directly against your skin and provides better insulation and less drag, but it is more delicate and harder to put on — you need lubricant. Lined wetsuits have a fabric interior, making them easier to wear but slightly less warm. Most competitive freedivers use open-cell for performance.

How should a freediving wetsuit fit?

It should fit snugly everywhere with no air pockets or loose folds, but you should still be able to breathe comfortably and raise your arms overhead. A wetsuit that is too tight restricts breathing and movement. Most brands offer size charts — measure your chest, waist, hips, and height to find the right fit.