The Decathlon 2-Second Tent sets up in only 2 seconds! How? Just remove the plastic strap and throw it in the air. It’s a practical cool idea. The Decathlon 2-second Tent is waterproof, ventilated, durable and it fits 2 people comfortably. Folding it after use only takes about 15 seconds. You can buy the Decathlon 2-second Tent for a price of only $69 (Originally $89 with $20 rebate). Decathlon.