Do you have a canine with a big dog personality? Here is a tank for him, made in 100% cotton for comfort and breathability (fiber content may vary for different colors). It is safe to machine wash and comes in multiple sizes, M - XL. For breeds with larger chests, sizing up is recommended. 
 
NOTE: Never leave clothes on your dog unattended or for long periods. Garments can get tangled on your dog if they become loose or if they try and get them off due to getting overheated. 
 
100% combed ringspun cotton (fiber content may vary for different colors)
Medium fabric 
For breeds with a larger chest, purchase one size up from the weight range. Dog tanks run small.