The arboreal Aeromi is a fur-covered humanoid about 4 to 5 feet in height with a long bushy tail. It has relatively long limbs ending in claws; they are primarily used for climbing, but make for formidable weapons as well. It is quite dexterous (accounting for the armor class). An aeromi has stretchable skin between its upper and lower limbs and along the side of its body (a patagium) that allows it to glide effectively between trees. This patagium is not continuous but instead is anchored in key points on its body. It speaks its own language that includes various clicks and chittering, but many also speak Common to some degree.

Aeromi are nocturnal and have Darkvision to a range of 90’ when outdoors, even on the darkest of nights. On a clear night with ample star- or moonlight, an aeromi can see nearly as well as a human can in daylight. In indoor areas or underground the aeromi can see with Darkvision out to 30 feet. An aeromi suffers a -1 attack penalty in bright sunlight or within the radius of a light spell.

An aeromi climbs readily among the massive redwood and sequoia trees that it lives among. Aeromi villages are built upon platforms and bridges in the upper reaches of these forests.

An aeromi tends to carry little to allow mobility, but may utilize belts and clothing that can be fastened between the anchor points of its patagium. Aeromi may utilize humanoid weaponry when needed.