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It is true that traditional silicone sex dolls are usually heavier than TPE sex dolls of the same height and build. However, this weight gap has been reduced in recent years thanks to several engineering improvements.

Modern manufacturers now use lightweight structural techniques to reduce overall silicone doll weight without sacrificing durability.

Common weight-reduction methods include:

1️⃣ Hollow Casting Zones

Some internal body areas that do not require high load strength are cast with controlled hollow chambers instead of solid silicone. This reduces total mass while preserving surface realism.

Typical hollow zones may include:

• Upper torso interior
• Thigh core sections
• Non-stress body volume areas

This method can reduce total weight by 2–5 kg depending on body size.

2️⃣ Dual-Density Silicone Construction

Instead of using uniform high-density silicone everywhere, manufacturers may use:

• Reinforced high-density silicone in stress areas
• Lower-density silicone in low-stress volume areas

This preserves tear resistance where needed while lowering total body weight.

3️⃣ Lightweight Skeleton Systems

Earlier skeletons were fully solid steel. Newer builds may use:

• Hollow stainless frames
• Alloy composite joints
• Load-optimized joint blocks

This can reduce internal frame weight by 10–20% while keeping joint strength acceptable.

4️⃣ Body Proportion Optimization

Some newer silicone models are designed with:

• Slimmer limb cores
• Reduced internal volume in non-visible areas
• Structural ribbing instead of solid fill

This keeps external shape but reduces internal mass.

Practical Result: New Weight Ranges

With modern lightweight methods:

This puts some lightweight silicone models close to mid-weight TPE dolls.

Important Reality Check

Weight reduction does not mean all silicone dolls are now lightweight. Buyers should still verify:

• Published net weight
• Whether hollow casting is used
• Skeleton type
• Density description
• Real user measurements

If a listing does not state weight clearly, that is a risk signal.