[Costco] Kirkland Signature Men's Pima Cotton Polo, $12.97
https://www.costco.ca/kirkland-signatur ... 98147.html
Colours : black, dark blue, grey or blue
Seems made of good materials: 85% cotton, 10% silk, 5% elastane
Buy 6 or more items, save 25%
May be available In-Warehouse at a lower price, but in-store selection may be more limited.
The US Costco website has some reviews for this item:
https://www.costco.com/kirkland-signatu ... 45918.html