What happened to the men's clothes before they made the journey in the book a sound of thunder?

In Ray Bradbury's "A Sound of Thunder," the men's clothes were treated with a special process to prevent any contamination or alteration of the past during their time travel. The clothes were designed to be "time-safe," ensuring that nothing from the future would interfere with the historical environment they would encounter. This precaution was crucial to maintain the integrity of the timeline and avoid unintended consequences from their actions in the past.