Hemline Seam Fix seam ripper is a sharp blade, safety ball and lid with innovative thread removers on each end. Specially formulated plastic material grabs and removes excess threads without marking or sticking to the fabric.
TO USE:
Slice through stitches every 2-4cm. Pull out thread on the underside.
Replace cover and use rubber head to remove thread tails- roll head along the unpicked seam.

Take care when sliding blade between fabrics, it is very sharp. Adult supervision is recommended for this product.  
A tool as useful as a pair of scissors!