Eberhard Faber's Soft FIMO oven-hardening polymer modelling clay. Great for all sorts of modelling, including detailed and filigree work. Slightly softer than FIMO Classic, so easier to work, but still hardens in a standard domestic oven.
FIMO Soft comes in 24 standard colours and 24 effects colours, all intermixable. Each block measures 55x55x15mm, weighs 58g, and is segmented into 8 pieces for ease of use. Children's use - 8 years and older and supervise as necessary.