For ttube who dare even with mud or rain on the bike.
From water and dirt
Reliably prevents the ingress of water and dirt between the seat post and seat tube. Allowed by the wiping function to adjust even the worst dirt and mud, the saddle height without ruining the seatpost and frame.
Also excellent as a framework for protecting the double bridge forks.
BASF polyurethane ring
Very good sealing because porous dense foamed. Extremely tough but flexible and abrasion resistant.
Length: 20 mm
# 1 for 26-29 mm seatposts Ø
# 2 for 29-32 mm seatposts Ø
# 3 for 32-35 mm seatposts Ø
Weight: from 4g