The 2022 Invincible Challenge is a flexible year-long challenge. You select your goal distance to be completed individually or tackled with a team. 

This option is for the t-shirt only. Optional log access sold separately. 

 

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 fees are NOT included in the shipping fee. You are responsible to pay any such fees if and when they should occur. Refunds will not be given for packages returned unclaimed. Please refer to your country's customs laws prior to registration.