Longtail WS – with Child Seats

Protect your longtail family bike with the BikeParka Longtail WS — a waterproof bicycle cover designed for longtail bikes with rear child seats fitted.

The Longtail WS gives extra coverage around the rear of the bike, helping cover child seats, high backs, racks and family-bike accessories. It is made for longtail-style bikes where the rear of the bike is longer and taller than a standard bike.

Made from tough waterproof ripstop fabric with seam-sealed construction, the Longtail WS works as a year-round rain cover, helping protect your bike from rain, dirt, snow, ice and everyday outdoor weather. The adjustable toggle system lets you shape the cover around your bike, helping keep the fit secure when the bike is parked outside.

The cover includes two lock-through slots, so you can pass a bike lock through the cover and around the bike, securing the bike and cover together while keeping the cover positioned low around the frame.

Designed for longtail bikes with child seats, including Tern GSD-style setups, RadWagon, Yuba Boda Boda, Benno Boost, Riese & Müller Multitinker, Cube Longtail Hybrid, Trek Fetch+ 2, Specialized Globe Haul LT and similar longtail family bikes.

Each cover packs neatly into a durable Stuff Sac for storage or transport when not in use.

Not sure your longtail fits? Find your fit by bike type, or read the model-by-model rain cover guides for Tern GSD and Xtracycle longtails — choose the WS if rear child seats are fitted. Every longtail we have measured, with the cover that fits each one, is in the cargo, longtail and trike bike cover fit guide.

As Featured In

"BikeParka, the specialist for high-quality bicycle covers."
— BIKE Magazine, July 2025

Key Features

• Designed for longtail bikes with rear child seats fitted

• Extra rear coverage for child seats, high backs and family-bike accessories

• Made from tough waterproof ripstop fabric

• Seam-sealed for reliable weather protection

• PFAS- and PFC-free — no “forever chemicals”

• Adjustable toggle system for a secure fit

• Suits family longtails kept outdoors all year round

• Two lock-through slots for securing the bike and cover

• Packs into a compact Stuff Sac

For longtail bikes without fitted child seats, see BikeParka Longtail.

For standard bikes with a child seat on the rear carrier, see BikeParka XL / MTB.

Adjustable Fit

Recommended bike length: up to approx. 210cm

Handlebars: up to approx. 80cm

Weight: approx. 500g

Frequently Asked Questions

Does the Longtail WS fit a Tern GSD with Clubhouse+?
Yes, the Longtail WS is designed to cover the Tern GSD with the Yepp Maxi, Clubhouse, Clubhouse+ and most aftermarket rear child seats.

Can I fit the Longtail WS over two child seats?
The Longtail WS accommodates most setups with one or two child seats. We recommend checking the dimensions before ordering if you have an unusual configuration.

What longtail bikes without child seats does the WS fit?
The WS will fit most longtails without child seats too — it is simply wider. If you do not have child seats, the standard Longtail cover is the right choice.