Why cooling can change appearance
Anagram explains that a foil balloon moved from indoors into colder surroundings can appear softer, and can look fuller again after returning indoors as the gas warms.
This is general temperature behavior, not a guarantee that every softened balloon will recover. A damaged balloon may also lose gas; appearance alone does not distinguish the causes.
Review the sequence before naming a defect
Record whether the change happened immediately after transport between environments or developed gradually while conditions remained similar. Compare photographs taken under comparable conditions and note any visible damage.
Use the product’s handling instructions. Do not apply direct heat or automatically add more gas merely to remove wrinkles seen in a cold environment.
Indoor figures are not outdoor guarantees
UNDALO states normal use indoors and outdoors from −15 °C to +50 °C. This operating range does not establish outdoor floating duration or unrestricted use in every weather condition. The stated PET and Nylon floating periods apply to normal indoor use.
For this range, PET is stated at 5 days and Nylon at 7 days before gradual loss of fullness and wrinkling; about 2 further floating days can follow with reduced fullness. With air, both materials can remain inflated for 15 days or more.
Compare appearance and floating separately
A balloon may still float after it is no longer full-looking. Record those two endpoints independently. Sudden softness following a temperature change and the gradual change described in the indoor duration figures are different observations.
Frequently asked questions
Does cold-related softness always mean a leak?
No. Temperature can change apparent fullness. Check the sequence and conditions before identifying a leak; recovery is not guaranteed if the balloon is damaged.
Are the stated 5-day and 7-day periods guaranteed outdoors?
No. The 5-day PET and 7-day Nylon periods refer to normal indoor use. UNDALO states a normal-use temperature range of −15 °C to +50 °C, but outdoor floating duration remains 【待确认】.
Can the balloon float after wrinkles appear?
Yes. For the confirmed UNDALO range, approximately 2 additional floating days may follow the initial period, with reduced fullness.