What to wear to Solidays: Paris sits at 24°C (75°F) by day and 14°C (57°F) at night in June, on open field, with a moderate chance of rain. That means a light base with one warm layer you can carry, broken-in boots or sturdy trainers, and a bag small enough for the gate rules. The crowd leans indie, party and streetwear, so anything that survives the day reads as right.
Men's festival dressing at Solidays comes down to three decisions: how much you can take off when it hits 24°C (75°F), what you put back on at 14°C (57°F), and whether your shoes can take open field for 3 days.
The dominant aesthetics at Solidays are indie, party and streetwear. That is the visual language of the site, the stages, the merch, the crowd photos, and outfits that speak it look intentional rather than borrowed.
There is no enforced dress code. What the crowd rewards is a look that survives 3 days of open field without you having to protect it.
What people actually wear: one good layer over a light base, because the temperature halves after sunset.