Fetters UK

[Jimdini]

I have purchased quite a few items from them.Reliable delivery times discrete packaging.
Chest, bicep, wrist restraint very secure and comfortable for prolonged bondage.
Tight hood (blank mouth, pinhole eyes detachable blindfold) a very effective sensory restriction item comfortable in long term wear.
Muzzle harness, quite effective and stringent (I usually want it removed after 20 to 30 minutes).
Breath through silicone gag on lockable rubber strap (can wear this for quite long periods).
Lockable leather fist mitts (Hours of frustration).

http://www.fetters.co.uk/
(G added a link)

Gromet hope yhis is the sort of thing you want.