i usually wear a size 11 shoe since i like to have a little space left over in my shoe after i put on socks. However, i just noticed that my old cheapo sandals were a size 10. So should I get a size 10 or size 11 chaco z/1? thanks.

Tech Specs:

Upper Material:

polyurethane, rubber, nylon 

Sole:

Unaweep Vibram 

Lacing:

adjustable strap 

Recommended Use:

casual, fly fishing, river wading, camping, hiking 

Manufacturer Warranty:

lifetime