VP segment starts at :55 seconds into the video below.

The V.P. was the introductory golf disc from Vibram. An overstable putter that handles a head wind and gives a predictable, consistent fade (left for RHBH), this disc is available in X-Link and X-Link Firm.  The VP X-Link Firm is preferred by lob putters and hyzer putters. Designed for advanced players.

X-Link
The X-Link material is a unique rubber-based compound which resists scuffs, has incredible durability and unequaled grip. Additionally, X-Link has a stronger memory than any disc currently on the market, so if you do manage to bend it out of shape, in all likelihood, it will work its way back.

X-Link Firm
X-Link Firm is a rubber-based compound which is based on Vibram’s X-Link. It is a special blend designed to maximize the firmness of the disc while maintaining as much of the grip and durability that is found in the base X-Link material. Over 50 formulations were tested in the creation of X-Link Firm to create its optimal performance.