They recently renamed their Sensations yarn.
Here's what it said on their current ad:
25% off All Purl Essence™ Yarns
Sale $3.74 - $7.49 ea.
(Reg. $4.99 - $9.99 ea)
Valid Sep 8 - Sep 28
[COLOR="Red"][B]NEW![/B][/COLOR] Your favorite [SIZE="4"]Sensations™ yarns, [/SIZE]like Rainbow Classic, Boucle & Sincerely, have [SIZE="4"]a new name[/SIZE], but the quality and value remain the same! [SIZE="5"][COLOR="DarkOrchid"]Purl Essence™[/COLOR][/SIZE] yarns come in bright, fun new colors that coordinate well together. Mix & match solids & prints. You’ll love them for all your knitting and crochet projects. Includes Sensations™ yarn.