Yumble Kids Labor Day Sale: Get 30% Off! Posted by Hello Subscription on September 2, 2020. Labor Day Subscription Box Deals / Subscription Box Coupons & Deals / Yumble Coupons Hello Subscription may earn compensation via links in this post. Read the full disclosure Save for Later Notification Yumble Kids has a new sale this Labor Day! Get 30% off your first order! Use this link to subscribe and the coupon code LABORDAY2020 at checkout! Shipping is always FREE! Get 30% off at Yumble Kids! Check out all our Yumble Kids reviews to find out more about this subscription box! Here’s a look at the menu: Visit Yumble Kids to get this deal!