The explanation of the size: size 1=1 pc<br />                             size 2=3 pcs<br />                             size 3=5 pcs<br />                             size 4=8 pcs<br />Features:<br />Easy to use and quickly measure (15seconds)<br />No batteries required， Unbreakable， compressable<br />No mercury， non-toxic， safe for health and environment<br />Completely reusable<br />Pocket size， can be used at home or traveling.<br />Temperature Range: 35¡ã(95¡ã)~ 40¡ã(104¡ã)<br />Individual temperature sensitive strip thermometers in both ¡ã and ¡ã<br />The parents can monitor babies' body temperature continually， and won't effect babies' sleep<br /><br />Specifications:<br />Size:90 x 16 mm<br />Net weight:1 g<br />Main color:Black