As one of its daily deals, Amazon takes up to 40% off a selection of kids' helmets and protective gear, with deals starting from $8. Plus, Prime members bag free shipping on all orders. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping starts around $5.) Deal ends today. A couple of best bets:

• Bell Toddlers' Frozen 3D Olaf Multi-Sport Helmet for $17 (low by $11)
• Bell Kids' Star Wars Episode VII Stormtrooper Chinbar Helmet for $33.74 (pictured, low by $11)

These orders are guaranteed to arrive by Christmas.