YETI Rambler Replacement Lids for 20/30 oz Tumblers, 14 oz Mugs and 10 oz Lowballs Sure, the lids on our Rambler Tumblers are shatter-resistant. But you still might need a replacement lid if you happen to misplace yours in the field Protects from spills when on the go Clear and shatter-resistant lid lets you check your drink status in a flash Features a seal for a secure hold to your Rambler Perfect backup for your 30 oz. Rambler Tumbler