Bought for running, but find that the tips of the collar flops around and chafing your chin/chest area if unzipped. Runners will need to zip all the way up, or fold it inwards.
Men's Trail Running Short-Sleeved T-shirt - Blue/Turquoise
So sorry to hear that the collar flops around if unzipped. The purpose of the small collar is to protect the neck from chafing caused by the backpack while protecting you from sunburn. I will feedback your concerns to the suppliers on this issue.
Just to let you know more about the shirt. It has mesh panels that are strategically placed at the high-perspiration areas: under the armpits, on the sides and across the lower back. All that to make you comfortable while you run
Please stay safe during this period
Running Sports Advisor
Running the Extra Mile
Decathlon Joo Koon