Unlike Equestria, creatures that live on other continents wear clothes, they can at least wear a hat or scarf on them, but some wear full clothing or armor, this is the case of Grumman.
 
When he left Equestria with Tomcat, Grumman had only two sacks on him, but over time he realized that it would not be enough in his adventure. Grumman has a habit of putting his glasses around his neck forever, but when he arrives at Terraold, he tries to get into the habit of putting it around his head like Tomcat. He wears a coat for his travels across the old continent, in addition to that he is wearing a T-shirt with long sleeves and pants with boots, in order to protect while the weather is bad, he uses a little cape with a hood. Although his clothes seem commonplace, as for Tomcat, he chose them to facilitate his movements in flight but also on the ground, Although compared to that of his companion, his clothes are more appropriate for discretion. Subsequently, he adds leather protectors on his front shoes, he also has a belt where he can put three small bombs and a bag to put four more.  
Tomcat carries many items while on the move, including a variety of weapons.