The ToneAlly Travel Pad is beautifully weighted and designed.  It is unique in that it is the first to give you a guide to the angles of the 3  most important hand grip positions used in 21st century drumming;  Germanic, American and French.  Also, if you use Traditional hand grip position you can use the Germanic markings as your guide.  Dimensions are 6.5 x 5 x 1 inch with a 3.5 inch playing surface.