These are the standard thermals from The Flat Head which have been popular in Japan over 20 years! 
  
Created using vintage knitting machines, the fabric is surprisingly not too heavy yet incredibly warm! For added durability, these come with the iconic triple stitched collar and flat seam stitching construction. 
  
These are perfect for days when you want to keep warm! Wear it under a jacket or sweater and stay cosy!  

Click here to buy Black

Click here to buy Grey