Finally a Blend for a Shirt with alpaca that fits everyday needs.  This Blend of Alpaca, Cotton and Tencel has a wonderful feel.  When wearing mine I found it does have greater thermal retention to wear just by itself but of course can be used as under gear sport wear. 

20% Alpaca 40% Tencel 40% Cotton

Sizes follow american sport companies.  

Alpaca Thermal Sport Shirts

2 Color 4 Sizes Men & Women Styles