Wellington boots and parachute: what they have in common

1. Step 1. Wellington boots — is made of — Vulcanized rubber. Rubber.
2. Step 2. Vulcanized rubber — is material for — Spacesuit. The pressure bladder is rubber.
3. Step 3. Spacesuit — is used in — Vostok 1. The SK-1 spacesuit.
4. Step 4. Vostok 1 — has part — Parachute. Gagarin landed by parachute.

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