Nike Swim Core Solid 5" Shorts FEB20 Secure fit lace capture system:

Secure fit lace capture system: The lace-lock mechanism lets you dial in your preferred fit quickly and keeps the cord securely in place throughout the day

Do they stretch or loosen with time

and paddleboarding

What’s the length like

Can I wash it in a machine

Nike Swim Core Solid 5" Shorts FEB20 Secure fit lace capture system:The Nike Swim Core Solid 5" Shorts in Black are a lightweight, mesh lined swim short style. Built from 100% polyester mechanical stretch twill that's durable, comfortable and sheds water. The polyester twill fabric gives these shorts more of a chino look making them perfect for everyday wear in the heat of summer. The trunk's waistband is crafted with elastic stretch and a drawcord for a secure fit. They also feature a built in mesh brief for support,