Thermal Baselayer L/S Baselayer. Made by Stash. The Stash Baselayer is suitable for both cold & warm weather. The Thermotex fabric is comfortable & lightweight, & is designed to wick moisture away from the skin. The fast drying action reduces the risk of muscle chill, helping to maintain a controlled temperature & aid more efficient training. It can be worn for training, gym, track or playing, either alone or underneath other clothing. This garment is designed to be worn tight. To ensure a correct fit, measure your chest under your underarms, & choose the corresponding size. Stash Print On The Arm. Colour Red