DT cryptic

[08012006]

Could someone please expain two from yesterday's puzzle 26082:-

11d Carrying gym bag before class = PENETRATING
19d Hammer staple = VAMPIRE

[Sandy-Wroe]

Hammer was a UK production company which made innumerable vampire films.

[Jumbuck]

11d gym = P.E., bag = net (both meaning 'capture), class = rating BUT penetrating = carrying???

[mac44]

gym is PE, to bag is to NET and class is RATING

[mac44]

Main Entry: penetrating
Part of Speech: adjective
Definition: stinging, harsh
Synonyms:
biting, carrying, clear-cut, crisp, cutting, edged, entering, forcing, going through, infiltrating, ingoing, intrusive, passing through, penetrant, permeating, pervasive, piercing, pointed, puncturing, pungent, sharp, shrill, strong, trenchant

[08012006]

Thanks for your responses.