Techniques to determine depth for a number of wearable devices, which may be worn in layers are provided. A wearable device can receive measurements from sensors to include sensors from a number of other wearable devices. Based on the sensor measurements, the wearable device can determine a depth for the wearable devices. The depth can include an indication of which wearable device is closest to a user, which wearable device is closest to an external environment, or the like.