4 Pack Loose Fit Boxers £10 - With Free UK Delivery Written by Optimus Performance Marketing on March 29, 2019. Posted in Awin, Fashion, General Promotions, Offers/Promotions, Promotion, UK Charles Wilson Affiliate Newsletter 4 Pack Loose Fit Boxers £10 - With Free UK Delivery 4 Pack Loose Fit Boxers £10 - With Free UK Delivery at Charles Wilson. Use Code: FLASH2 at Checkout. Click here to find out more. 4 pack loose fit boxers Cotton boxers with a looser, longer fit. They have an elasticated waist and front button opening for comfort and convenience. Now £12.95 4 pack loose fit boxers Cotton boxers with a looser, longer fit. They have an elasticated waist and front button opening for comfort and convenience. Now £12.95 Join Charles Wilson Affiliate Programme With AWIN