2023 Invincible Challenge T-shirt ONLY - NOW SHIPPING

2023 Invincible Challenge The 2023 Invincible Challenge is a flexible year-long challenge. Choose from either 2023 MILES or 2023 KM to be completed individually or tackled with a team. Count all distance completed since Jan 1, 2023. Includes:  unisex or ladies tech tshirt Invincible Challenge Facebook group access online manual log access downloadable tracker you can print and color as you go  ABOUT THE SHIRTS:  T-shirts are 100% polyester dry fit. Lightweight, cotton-feel soft shirt. Please refer to charts below and compare measurements to one of your current favorite-fit shirts for best sizing.    LADIES T-SHIRT SIZE CHART (chest measurements in inches) XS S M L XL 2X 3X 4X  36 38 40 43 46 49 53 57 UNISEX T-SHIRT SIZE CHART (chest measurements in inches) XS S M L XL 2X 3X 4X  37 40 43 46 49 52 56 60    Measurements are for the garment itself. For looser fit, order larger than your personal measurements.   International participants: Customs fe