Ariat Womens Auburn 1/4 Zip Baselayer Red Bud. The Ariat Auburn Baselayer has everything you could need and more! The performance Baselayer features AriatTEK Heat Series technology keeps you cool when the competition heats up, moisture-wicking fabric using Moisture Movement Technologyâ ¢ which wicks moisture away from the skin, Freeze Pointâ ¢ cooling technology reduces skin temperature up to 2.8 °C/5 °F, odour resistance, Sun Protection Fabricâ ¢ with UPF rating of 50+ provides protection from ultraviolet rays and a flattering reglan style with perforated panels which provide breathability to keep you comfortable. The Auburn Baselayer is definitely something every equestrian needs as part of their wardrobe.