Stay connected with your phone or laptop. Never miss the best signal areas. The Wi Fi Activated T Shirt has a pulsating light that increases in strength when the Wi Fi signal is stronger. You can search for the best spot possible in a coffee shop or cafe. The Wi Fi T-Shirt is ideal for anyone who is constantly on the go but who wants to stay connected. It is also a great gift idea as well as promotional giveaway. Not only is this T-Shirt functional but it is also attractive & durable. It comes with: Glowing Display Showing Wi Fi Signal Strength Red, 100% Cotton Hand Washable Detects 802.11b & 802.11g Wireless Network Signals Small Medium Large X-Large