Many paintballers hang up their gear for the winter, but some of the more hardcore fans play all year long.  Playing in the cold, however will require you to use certain paintball equipment.  CO2 tanks tend to freeze up after shooting your marker repetitively; this causes inconsistencies in the temperature of the gas, making your paintball gun’s shooting less reliable.

Beginner Buying Guide

If you're just getting into the sport of paintball, you're going to need some gear.  Here's a good buying guide for paintball equipment you'll want to start with:
1- Paintball Mask/Goggle System.