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The CHPT3 Base Layer 1.83 is an ultra-lightweight, super-soft and luxurious summer-weight base layer that excels at moisture managment. Designed to be worn under the 1.22 jersey. the 1.83 Base is also the perfect base for all your riding between April and October.
The neck is a little rounder than normal, more like a vest than a t-shirt. This compensates for the higher necks of the 1.21 and 1.61. A sleeveless cut is used, as this and the 1.21 jersey are designed to be used together. Sleeves on an undershirt can often be more uncomfortable with a short-sleeve jersey. The base layer is made from a microfibre polyester made as light and soft as possible. Its hydrophilic outer layer wicks moisture off the skin to the jersey yet doesn't absorb moisture along the way. It's a perfect weight, and when paired with the 1.21 jersey one ends up with the combined weight of a normal-looking jersey, only with much better comfort and moisture management.