A wearable band with an adjustable size or length and with an interchangeable identification (ID) element. The band includes a first band element with a recessed surface for receiving and retaining the identification element such as with its included ID module extending through a hole in the first band element body. To allow user sizing, the wearable band includes a second band element with a planar body extending from a first to a second end. The second band element body is greater in length than the first band element body and includes a hole for receiving the first band element body. The band includes a coupling mechanism that detachably connects an outer sidewall of the first band element body to the inner sidewall of the second band element body, e.g., to allow the two band elements to be selectively disconnected and reassembled without tools.