From Guild Wars 2 Wiki
The effect is merely visual as these items give no speeds boost or any other benefits, and it always ends when entering combat.
List of travel items
- As of the 1st of June, 2016, update, a travel toy effect has been introduced, which, when it is active, automatically equips the toy in question after landing with a glider. The effect has no effect while gliding or cancelling the glide mid-air.