Free baggage allowance is determined by number of bags, their weight and size.
Elite S7 Priority members Silver (Ruby), Gold (Sapphire) and Platinum (Emerald) can carry additional bags for free.

Parameters, determining free baggage allowance

• Number of baggage items (1 piece — 1 bag / box)
• Weight of transported baggage
• Size: checked-in baggage based on the sum of 3 dimensions (length-width-height) up to 203 cm, hand luggage not exceeding 55×40×23 cm

Free baggage allowance on S7 Airlines flight