 The weight range is 2.3 to 4.2 grams, a mean average of 3.1 grams.The length of the forearm is 26.6 to 31.7 millimetres, head and body is 32 to 40 mm, the tail is 24 to 35 mm, ear from base to tip is 8 to 12 mm long.The fur colour is greyish brown, darker at the base and warmer brown at the rump.