The cache is high in a tree and you will need a long pole to fetch it down (and put it back, of course!) Please don't even think about trying to climb to it, the tree is far too flimsy for that.
A substantial pre-form type container, larger than a film can but still (in my view) only a micro.
The cache is a long walk from my suggested parking. I have tried a shorter approach through the sailing club, a path (though not a right of way) is shown from the B376 but I cannot find this path on the ground. You can drive under the motorway from the suggested parking and get a few metres closer, but the road is fairly narrow there.