SIERRA is the transcription into a rug of one of the three hand drawings imagined by Guillaume Delvigne for Maison Pierre Frey. Original and unique in shape, SIERRA is a clever play of texture between a curly wool background and a vegetal silk velvet. The irregularity of the cut velvet is made possible thanks to the “over-tuft” technique and evokes an organic aspect that subtly responds to the spirit of Guillaume Delvigne’s design.