Design Letters – Design Letters EUR

How to Choose the Right Kids Cup for Your Child

How to Choose the Right Kids Cup for Your Child

By Design Letters – Design Letters EUR | Published: 2026-10-28

Category: Buying Guides

Find the perfect toddler cup with lid for your child. Compare the Design Letters Kids Cup and Kids Basic Eco Cup by leak-proof design, material, and eco-friendliness.

Quick answer

Choose the Design Letters Kids Cup if you need a fully leak-proof cup that works in any position. Pick the Kids Basic Eco Cup if you prefer a lighter, biobased material and don't mind a simpler lid.

Leak-proof vs. drop-safe: what's the difference?

The Kids Cup is double leak-proof both when closed and open, making it ideal for bags and car trips. The Kids Basic Eco Cup is drop-safe but not advertised as leak-proof when open, so it's better for stationary use at home or in a high chair.

Material matters: Tritan vs. Ecozen

The Kids Cup is made from Tritan, a tough, clear plastic known for its durability and shatter resistance. The Kids Basic Eco Cup uses Ecozen, a biobased version derived from maize. Ecozen is non-toxic, BPA/BPS/phthalate-free, and processed at lower temperatures for energy efficiency. Both are safe, but Ecozen offers a smaller environmental footprint.

How to decide: step-by-step rules

  • Will the cup go in a diaper bag or backpack?: Yes → Choose the Kids Cup for its double leak-proof seal. No → The Kids Basic Eco Cup's drop-safe design is sufficient.
  • Does your child drink while lying back?: Yes → The Kids Cup is designed for easy drinking in any position. No → Either cup works fine for seated drinking.
  • Is eco-friendliness a priority?: Yes → The Kids Basic Eco Cup uses biobased Ecozen material. No → The Kids Cup is still BPA-free and durable. If you want both leak-proof and eco-friendly, note that the Kids Cup is not available in Ecozen.

Product facts

  • Kids cup: Double leak-proof design when closed and open; easy to drink from sitting, laid back, or in bed. No spills even when the cup is tipped over, so it's perfect for on-the-go and for toddlers who drink in different positions.
    Kids cup
    Kids cup
  • Kids Basic Eco Cup: Made from Ecozen, a biobased material derived from maize; non-toxic and 100% BPA/BPS/phthalate-free. A more sustainable choice that is still drop-safe and clear, without compromising on safety.
    Kids Basic Eco Cup
    Kids Basic Eco Cup

Which cup fits your child?

Best for

  • Active families who need a spill-proof cup for outings and travel
  • Parents who want a cup that works for drinking in a car seat or stroller

Not ideal for

  • Those seeking a fully biobased or compostable cup
  • Situations where a simple, lightweight cup is enough for table use

Shop Related Products

Kids cup

Kids cup

$15.18 $23.00

Shop Now
Kids Basic Eco Cup

Kids Basic Eco Cup

$8.32 $13.00

Shop Now