I rarely ride at night but there have been a couple of bicycle/vehicle accidents in my town recently and I figured a little visibility is worth 15 bucks if it prevents me from an accident. The directions are not very detailed and it took me a few minutes to figure out how to install the batteries (4-AA for the head lamp and 2-AAA for the tail light). They both work great, both have multiple functions to suit the type of riding you are doing. It took some finagling to get the head lamp mounted because of the front reflector and my&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Schwinn-17-Function-Bike-Computer/dp/B000DZD3FQ/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Schwinn 17-Function Bike Computer</a>. I was a little disappointed in the back light for two reasons: (1) my&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Topeak-Explorer-Bike-Rack/dp/B000FIE3WI/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Topeak Explorer Bike Rack</a>&nbsp;has a mounting plate for a light, but this one comes with a seat-post mount and (2) the tab you push down to release the light from the bracket broke the first time I tried to separate the pieces. So now I have no mount and a tail light I can't attach to my bike (yet). A great concept set though and I would still buy it again!